Altaïr, Brotherhood Mentor

Kelsien, the Plague

2 printings · from $2.52 to $14.89 · pictured: Secret Lair Drop #1558

Market history and store offers below are for Secret Lair Drop #1558; the range above covers the listed printings.

$10.99

cheapest of 9 store offers · see all

market $14.89

Mana cost: {R}{W}{B}

Type: Legendary Creature — Human Assassin

Commonly played as: Removal, Burn

Vigilance, haste
Kelsien gets +1/+1 for each experience counter you have.
{T}: Kelsien deals 1 damage to target creature you don't control. When that creature dies this turn, you get an experience counter.

Artist: Dan Watson

Released: 2024-06-24

Market price

  • TCGplayer: $14.89
  • Cardmarket foil (converted): $17.84
  • Cardmarket: €15.51
  • Cardmarket foil: €15.67
  • MTGO tix: 0
231 days of daily prices for Altaïr, Brotherhood Mentor: $11.50 to $14.89 $17.86 $11.49 2025-09-30 · regular $11.50 · foil $11.862025-09-30regular $11.50foil $11.86 2025-10-01 · regular $11.55 · foil $11.862025-10-01regular $11.55foil $11.86 2025-10-02 · regular $11.53 · foil $11.862025-10-02regular $11.53foil $11.86 2025-10-03 · regular $11.56 · foil $11.912025-10-03regular $11.56foil $11.91 2025-10-04 · regular $11.51 · foil $11.912025-10-04regular $11.51foil $11.91 2025-10-05 · regular $11.51 · foil $11.912025-10-05regular $11.51foil $11.91 2025-10-06 · regular $11.51 · foil $11.912025-10-06regular $11.51foil $11.91 2025-10-07 · regular $11.51 · foil $11.912025-10-07regular $11.51foil $11.91 2025-10-08 · regular $11.51 · foil $11.912025-10-08regular $11.51foil $11.91 2025-10-09 · regular $11.51 · foil $11.912025-10-09regular $11.51foil $11.91 2025-10-10 · regular $11.51 · foil $12.312025-10-10regular $11.51foil $12.31 2025-10-11 · regular $11.52 · foil $12.312025-10-11regular $11.52foil $12.31 2025-10-12 · regular $11.49 · foil $12.312025-10-12regular $11.49foil $12.31 2025-10-13 · regular $11.51 · foil $12.312025-10-13regular $11.51foil $12.31 2025-10-14 · regular $11.51 · foil $12.312025-10-14regular $11.51foil $12.31 2025-10-15 · regular $11.51 · foil $12.312025-10-15regular $11.51foil $12.31 2025-10-16 · regular $11.58 · foil $12.312025-10-16regular $11.58foil $12.31 2025-10-17 · regular $11.68 · foil $12.662025-10-17regular $11.68foil $12.66 2025-10-18 · regular $11.55 · foil $12.662025-10-18regular $11.55foil $12.66 2025-10-19 · regular $11.55 · foil $12.662025-10-19regular $11.55foil $12.66 2025-10-21 · regular $11.55 · foil $12.662025-10-21regular $11.55foil $12.66 2025-10-22 · regular $11.61 · foil $12.662025-10-22regular $11.61foil $12.66 2025-10-23 · regular $11.61 · foil $12.662025-10-23regular $11.61foil $12.66 2025-10-24 · regular $11.68 · foil $12.812025-10-24regular $11.68foil $12.81 2025-10-25 · regular $11.75 · foil $12.812025-10-25regular $11.75foil $12.81 2025-10-26 · regular $11.80 · foil $12.812025-10-26regular $11.80foil $12.81 2025-10-27 · regular $11.80 · foil $12.812025-10-27regular $11.80foil $12.81 2025-10-28 · regular $11.80 · foil $12.812025-10-28regular $11.80foil $12.81 2025-10-29 · regular $11.80 · foil $12.812025-10-29regular $11.80foil $12.81 2025-10-30 · regular $11.80 · foil $12.812025-10-30regular $11.80foil $12.81 2025-10-31 · regular $11.80 · foil $12.982025-10-31regular $11.80foil $12.98 2025-11-01 · regular $11.87 · foil $12.982025-11-01regular $11.87foil $12.98 2025-11-02 · regular $11.87 · foil $12.982025-11-02regular $11.87foil $12.98 2025-11-03 · regular $11.84 · foil $12.982025-11-03regular $11.84foil $12.98 2025-11-04 · regular $11.84 · foil $12.982025-11-04regular $11.84foil $12.98 2025-11-05 · regular $11.84 · foil $12.982025-11-05regular $11.84foil $12.98 2025-11-06 · regular $11.90 · foil $12.982025-11-06regular $11.90foil $12.98 2025-11-07 · regular $11.93 · foil $13.212025-11-07regular $11.93foil $13.21 2025-11-08 · regular $11.93 · foil $13.212025-11-08regular $11.93foil $13.21 2025-11-09 · regular $11.93 · foil $13.212025-11-09regular $11.93foil $13.21 2025-11-10 · regular $11.93 · foil $13.212025-11-10regular $11.93foil $13.21 2025-11-11 · regular $11.93 · foil $13.212025-11-11regular $11.93foil $13.21 2025-11-12 · regular $11.93 · foil $13.212025-11-12regular $11.93foil $13.21 2026-01-25 · regular $13.39 · foil $13.882026-01-25regular $13.39foil $13.88 2026-01-26 · regular $13.39 · foil $13.812026-01-26regular $13.39foil $13.81 2026-01-27 · regular $13.62 · foil $13.772026-01-27regular $13.62foil $13.77 2026-01-28 · regular $13.77 · foil $13.662026-01-28regular $13.77foil $13.66 2026-01-29 · regular $13.77 · foil $13.652026-01-29regular $13.77foil $13.65 2026-01-30 · regular $13.77 · foil $13.662026-01-30regular $13.77foil $13.66 2026-01-31 · regular $13.77 · foil $13.742026-01-31regular $13.77foil $13.74 2026-02-01 · regular $13.77 · foil $13.742026-02-01regular $13.77foil $13.74 2026-02-02 · regular $13.77 · foil $13.782026-02-02regular $13.77foil $13.78 2026-02-03 · regular $13.77 · foil $13.832026-02-03regular $13.77foil $13.83 2026-02-04 · regular $13.77 · foil $13.842026-02-04regular $13.77foil $13.84 2026-02-05 · regular $13.97 · foil $13.842026-02-05regular $13.97foil $13.84 2026-02-06 · regular $13.97 · foil $13.862026-02-06regular $13.97foil $13.86 2026-02-07 · regular $13.97 · foil $13.842026-02-07regular $13.97foil $13.84 2026-02-08 · regular $13.97 · foil $13.842026-02-08regular $13.97foil $13.84 2026-02-09 · regular $14.04 · foil $13.762026-02-09regular $14.04foil $13.76 2026-02-10 · regular $14.04 · foil $13.672026-02-10regular $14.04foil $13.67 2026-02-11 · regular $14.04 · foil $13.672026-02-11regular $14.04foil $13.67 2026-02-12 · regular $14.04 · foil $13.692026-02-12regular $14.04foil $13.69 2026-02-13 · regular $14.04 · foil $13.702026-02-13regular $14.04foil $13.70 2026-02-14 · regular $14.04 · foil $13.792026-02-14regular $14.04foil $13.79 2026-02-15 · regular $14.18 · foil $13.622026-02-15regular $14.18foil $13.62 2026-02-16 · regular $14.20 · foil $13.622026-02-16regular $14.20foil $13.62 2026-02-17 · regular $14.20 · foil $13.522026-02-17regular $14.20foil $13.52 2026-02-18 · regular $14.20 · foil $13.532026-02-18regular $14.20foil $13.53 2026-02-19 · regular $14.20 · foil $13.572026-02-19regular $14.20foil $13.57 2026-02-20 · regular $14.20 · foil $13.612026-02-20regular $14.20foil $13.61 2026-02-21 · regular $14.32 · foil $13.602026-02-21regular $14.32foil $13.60 2026-02-22 · regular $14.32 · foil $13.602026-02-22regular $14.32foil $13.60 2026-02-23 · regular $14.32 · foil $13.582026-02-23regular $14.32foil $13.58 2026-02-24 · regular $14.24 · foil $13.602026-02-24regular $14.24foil $13.60 2026-02-25 · regular $14.24 · foil $13.622026-02-25regular $14.24foil $13.62 2026-02-26 · regular $14.24 · foil $13.792026-02-26regular $14.24foil $13.79 2026-02-27 · regular $14.24 · foil $13.942026-02-27regular $14.24foil $13.94 2026-02-28 · regular $14.24 · foil $13.932026-02-28regular $14.24foil $13.93 2026-03-01 · regular $14.27 · foil $13.932026-03-01regular $14.27foil $13.93 2026-03-02 · regular $14.27 · foil $13.972026-03-02regular $14.27foil $13.97 2026-03-03 · regular $14.36 · foil $14.052026-03-03regular $14.36foil $14.05 2026-03-04 · regular $14.36 · foil $14.162026-03-04regular $14.36foil $14.16 2026-03-05 · regular $14.36 · foil $14.142026-03-05regular $14.36foil $14.14 2026-03-06 · regular $14.36 · foil $14.172026-03-06regular $14.36foil $14.17 2026-03-07 · regular $14.36 · foil $14.182026-03-07regular $14.36foil $14.18 2026-03-08 · regular $14.36 · foil $14.072026-03-08regular $14.36foil $14.07 2026-03-09 · regular $14.36 · foil $14.142026-03-09regular $14.36foil $14.14 2026-03-18 · regular $14.36 · foil $14.152026-03-18regular $14.36foil $14.15 2026-03-19 · regular $14.61 · foil $14.322026-03-19regular $14.61foil $14.32 2026-03-20 · regular $14.61 · foil $14.262026-03-20regular $14.61foil $14.26 2026-03-21 · regular $14.61 · foil $14.252026-03-21regular $14.61foil $14.25 2026-03-22 · regular $14.61 · foil $14.252026-03-22regular $14.61foil $14.25 2026-03-23 · regular $14.61 · foil $14.312026-03-23regular $14.61foil $14.31 2026-03-24 · regular $14.61 · foil $14.262026-03-24regular $14.61foil $14.26 2026-03-25 · regular $14.76 · foil $14.262026-03-25regular $14.76foil $14.26 2026-03-26 · regular $14.76 · foil $14.292026-03-26regular $14.76foil $14.29 2026-03-27 · regular $14.76 · foil $14.332026-03-27regular $14.76foil $14.33 2026-03-28 · regular $14.76 · foil $14.362026-03-28regular $14.76foil $14.36 2026-03-29 · regular $14.76 · foil $14.362026-03-29regular $14.76foil $14.36 2026-03-30 · regular $14.76 · foil $14.392026-03-30regular $14.76foil $14.39 2026-03-31 · regular $14.76 · foil $14.422026-03-31regular $14.76foil $14.42 2026-04-01 · regular $14.73 · foil $14.342026-04-01regular $14.73foil $14.34 2026-04-02 · regular $14.73 · foil $14.262026-04-02regular $14.73foil $14.26 2026-04-03 · regular $14.82 · foil $14.332026-04-03regular $14.82foil $14.33 2026-04-05 · regular $14.86 · foil $14.352026-04-05regular $14.86foil $14.35 2026-04-06 · regular $14.86 · foil $14.362026-04-06regular $14.86foil $14.36 2026-04-07 · regular $14.83 · foil $14.332026-04-07regular $14.83foil $14.33 2026-04-08 · regular $14.83 · foil $14.552026-04-08regular $14.83foil $14.55 2026-04-20 · regular $14.70 · foil $14.572026-04-20regular $14.70foil $14.57 2026-04-21 · regular $14.70 · foil $14.532026-04-21regular $14.70foil $14.53 2026-04-22 · regular $14.65 · foil $14.572026-04-22regular $14.65foil $14.57 2026-04-23 · regular $14.65 · foil $14.602026-04-23regular $14.65foil $14.60 2026-04-24 · regular $14.65 · foil $14.812026-04-24regular $14.65foil $14.81 2026-04-25 · regular $14.65 · foil $14.792026-04-25regular $14.65foil $14.79 2026-04-26 · regular $14.65 · foil $14.792026-04-26regular $14.65foil $14.79 2026-04-27 · regular $14.65 · foil $14.802026-04-27regular $14.65foil $14.80 2026-04-28 · regular $14.65 · foil $14.772026-04-28regular $14.65foil $14.77 2026-04-29 · regular $14.65 · foil $14.792026-04-29regular $14.65foil $14.79 2026-04-30 · regular $14.65 · foil $14.822026-04-30regular $14.65foil $14.82 2026-05-01 · regular $14.65 · foil $14.782026-05-01regular $14.65foil $14.78 2026-05-02 · regular $14.57 · foil $14.772026-05-02regular $14.57foil $14.77 2026-05-11 · regular $14.782026-05-11regular $14.78 2026-05-12 · regular $14.782026-05-12regular $14.78 2026-05-13 · regular $14.78 · foil $14.692026-05-13regular $14.78foil $14.69 2026-05-14 · regular $14.78 · foil $14.722026-05-14regular $14.78foil $14.72 2026-05-15 · regular $14.78 · foil $14.762026-05-15regular $14.78foil $14.76 2026-05-16 · regular $14.96 · foil $14.822026-05-16regular $14.96foil $14.82 2026-05-17 · regular $14.96 · foil $14.822026-05-17regular $14.96foil $14.82 2026-05-18 · regular $14.98 · foil $14.842026-05-18regular $14.98foil $14.84 2026-05-19 · regular $15.02 · foil $14.802026-05-19regular $15.02foil $14.80 2026-05-20 · regular $15.07 · foil $14.852026-05-20regular $15.07foil $14.85 2026-05-21 · regular $15.07 · foil $14.852026-05-21regular $15.07foil $14.85 2026-05-22 · regular $15.07 · foil $14.852026-05-22regular $15.07foil $14.85 2026-05-23 · regular $15.08 · foil $15.372026-05-23regular $15.08foil $15.37 2026-05-24 · regular $15.07 · foil $15.372026-05-24regular $15.07foil $15.37 2026-05-25 · regular $15.07 · foil $15.332026-05-25regular $15.07foil $15.33 2026-05-26 · regular $15.07 · foil $15.322026-05-26regular $15.07foil $15.32 2026-05-27 · regular $15.07 · foil $15.332026-05-27regular $15.07foil $15.33 2026-05-28 · regular $15.08 · foil $15.332026-05-28regular $15.08foil $15.33 2026-05-29 · regular $15.08 · foil $15.312026-05-29regular $15.08foil $15.31 2026-05-30 · regular $15.08 · foil $15.292026-05-30regular $15.08foil $15.29 2026-05-31 · regular $15.07 · foil $15.112026-05-31regular $15.07foil $15.11 2026-06-01 · regular $15.08 · foil $15.122026-06-01regular $15.08foil $15.12 2026-06-02 · regular $15.08 · foil $15.152026-06-02regular $15.08foil $15.15 2026-06-03 · regular $15.13 · foil $15.152026-06-03regular $15.13foil $15.15 2026-06-04 · regular $15.13 · foil $15.182026-06-04regular $15.13foil $15.18 2026-06-05 · regular $15.13 · foil $15.262026-06-05regular $15.13foil $15.26 2026-06-06 · regular $15.17 · foil $15.342026-06-06regular $15.17foil $15.34 2026-06-07 · regular $15.17 · foil $15.332026-06-07regular $15.17foil $15.33 2026-06-08 · regular $15.17 · foil $15.372026-06-08regular $15.17foil $15.37 2026-06-09 · regular $15.13 · foil $15.142026-06-09regular $15.13foil $15.14 2026-06-10 · regular $15.13 · foil $15.122026-06-10regular $15.13foil $15.12 2026-06-11 · regular $15.18 · foil $15.132026-06-11regular $15.18foil $15.13 2026-06-12 · regular $15.18 · foil $15.122026-06-12regular $15.18foil $15.12 2026-06-13 · regular $15.18 · foil $15.092026-06-13regular $15.18foil $15.09 2026-06-14 · regular $15.18 · foil $15.092026-06-14regular $15.18foil $15.09 2026-06-15 · regular $15.17 · foil $15.072026-06-15regular $15.17foil $15.07 2026-06-16 · regular $15.17 · foil $15.062026-06-16regular $15.17foil $15.06 2026-06-17 · regular $15.17 · foil $15.042026-06-17regular $15.17foil $15.04 2026-06-18 · regular $15.17 · foil $15.112026-06-18regular $15.17foil $15.11 2026-06-19 · regular $15.20 · foil $15.222026-06-19regular $15.20foil $15.22 2026-06-20 · regular $15.25 · foil $15.222026-06-20regular $15.25foil $15.22 2026-06-21 · regular $15.25 · foil $15.222026-06-21regular $15.25foil $15.22 2026-06-22 · regular $15.25 · foil $15.222026-06-22regular $15.25foil $15.22 2026-06-23 · regular $15.25 · foil $15.272026-06-23regular $15.25foil $15.27 2026-06-24 · regular $15.25 · foil $15.332026-06-24regular $15.25foil $15.33 2026-06-25 · regular $15.27 · foil $15.382026-06-25regular $15.27foil $15.38 2026-06-26 · regular $15.27 · foil $15.372026-06-26regular $15.27foil $15.37 2026-07-24 · regular $15.21 · foil $14.042026-07-24regular $15.21foil $14.04 2026-07-25 · regular $15.21 · foil $14.052026-07-25regular $15.21foil $14.05 2026-07-26 · regular $15.21 · foil $14.052026-07-26regular $15.21foil $14.05 2026-07-27 · regular $15.21 · foil $14.042026-07-27regular $15.21foil $14.04 2026-07-28 · regular $15.21 · foil $14.052026-07-28regular $15.21foil $14.05 2026-07-29 · regular $15.21 · foil $14.052026-07-29regular $15.21foil $14.05 2026-07-30 · regular $15.21 · foil $14.002026-07-30regular $15.21foil $14.00 2026-07-31 · regular $15.21 · foil $13.892026-07-31regular $15.21foil $13.89 2026-08-01 · regular $15.21 · foil $13.892026-08-01regular $15.21foil $13.89 2026-08-02 · regular $15.21 · foil $13.892026-08-02regular $15.21foil $13.89 2026-08-03 · regular $15.21 · foil $13.862026-08-03regular $15.21foil $13.86 2026-08-04 · regular $15.21 · foil $13.892026-08-04regular $15.21foil $13.89 2026-08-05 · regular $15.21 · foil $13.882026-08-05regular $15.21foil $13.88 2026-08-06 · regular $15.21 · foil $13.842026-08-06regular $15.21foil $13.84 2026-08-07 · regular $15.21 · foil $13.872026-08-07regular $15.21foil $13.87 2026-08-08 · regular $15.21 · foil $13.842026-08-08regular $15.21foil $13.84 2026-08-09 · regular $15.21 · foil $13.852026-08-09regular $15.21foil $13.85 2026-08-10 · regular $15.21 · foil $13.842026-08-10regular $15.21foil $13.84 2026-08-11 · regular $15.21 · foil $13.852026-08-11regular $15.21foil $13.85 2026-08-12 · regular $15.21 · foil $13.652026-08-12regular $15.21foil $13.65 2026-08-13 · regular $15.21 · foil $13.662026-08-13regular $15.21foil $13.66 2026-08-14 · regular $15.22 · foil $13.512026-08-14regular $15.22foil $13.51 2026-08-15 · regular $15.20 · foil $13.612026-08-15regular $15.20foil $13.61 2026-08-16 · regular $15.20 · foil $13.612026-08-16regular $15.20foil $13.61 2026-08-17 · regular $15.16 · foil $13.602026-08-17regular $15.16foil $13.60 2026-08-18 · regular $15.16 · foil $13.592026-08-18regular $15.16foil $13.59 2026-08-19 · regular $15.16 · foil $13.602026-08-19regular $15.16foil $13.60 2026-08-20 · regular $15.16 · foil $13.512026-08-20regular $15.16foil $13.51 2026-08-21 · regular $15.16 · foil $13.472026-08-21regular $15.16foil $13.47 2026-08-22 · regular $15.16 · foil $13.472026-08-22regular $15.16foil $13.47 2026-08-23 · regular $15.16 · foil $13.322026-08-23regular $15.16foil $13.32 2026-08-24 · regular $15.17 · foil $13.322026-08-24regular $15.17foil $13.32 2026-08-25 · regular $15.17 · foil $13.342026-08-25regular $15.17foil $13.34 2026-08-28 · regular $15.18 · foil $13.492026-08-28regular $15.18foil $13.49 2026-08-29 · regular $15.18 · foil $13.542026-08-29regular $15.18foil $13.54 2026-08-30 · regular $15.15 · foil $13.672026-08-30regular $15.15foil $13.67 2026-08-31 · regular $15.15 · foil $13.682026-08-31regular $15.15foil $13.68 2026-09-01 · regular $15.13 · foil $13.952026-09-01regular $15.13foil $13.95 2026-09-02 · regular $15.13 · foil $13.822026-09-02regular $15.13foil $13.82 2026-09-03 · regular $15.11 · foil $13.832026-09-03regular $15.11foil $13.83 2026-09-04 · regular $15.11 · foil $13.872026-09-04regular $15.11foil $13.87 2026-09-05 · regular $15.11 · foil $13.882026-09-05regular $15.11foil $13.88 2026-09-06 · regular $15.11 · foil $13.882026-09-06regular $15.11foil $13.88 2026-09-08 · regular $15.08 · foil $13.872026-09-08regular $15.08foil $13.87 2026-09-09 · regular $15.06 · foil $13.872026-09-09regular $15.06foil $13.87 2026-09-10 · regular $15.06 · foil $13.862026-09-10regular $15.06foil $13.86 2026-09-11 · regular $15.062026-09-11regular $15.06 2026-09-12 · regular $15.06 · foil $13.642026-09-12regular $15.06foil $13.64 2026-09-13 · regular $15.06 · foil $13.632026-09-13regular $15.06foil $13.63 2026-09-14 · regular $15.06 · foil $13.642026-09-14regular $15.06foil $13.64 2026-09-15 · regular $15.06 · foil $13.702026-09-15regular $15.06foil $13.70 2026-09-16 · regular $14.98 · foil $13.712026-09-16regular $14.98foil $13.71 2026-09-17 · regular $14.89 · foil $13.752026-09-17regular $14.89foil $13.75 2026-09-19 · regular $14.88 · foil $13.782026-09-19regular $14.88foil $13.78 2026-09-20 · regular $14.88 · foil $13.782026-09-20regular $14.88foil $13.78 2026-09-21 · regular $14.89 · foil $13.782026-09-21regular $14.89foil $13.78 2026-09-22 · regular $14.89 · foil $13.792026-09-22regular $14.89foil $13.79 2026-09-23 · regular $14.89 · foil $13.812026-09-23regular $14.89foil $13.81 2026-09-24 · regular $14.89 · foil $13.882026-09-24regular $14.89foil $13.88 2026-09-25 · regular $14.89 · foil $13.772026-09-25regular $14.89foil $13.77 2026-09-26 · regular $14.89 · foil $17.862026-09-26regular $14.89foil $17.86 2026-09-27 · regular $14.89 · foil $17.862026-09-27regular $14.89foil $17.86 2026-09-28 · regular $14.89 · foil $17.842026-09-28regular $14.89foil $17.84 2025-09-30 2026-09-28
regular foil · 231 days tracked · $11.50 → $14.89 (+29%) · low $11.49 · high $17.86
Daily USD snapshots; a flat stretch is a day with no new price recorded.

Store prices

The 3 cheapest per condition and finish, in stock at the last check. Offers not re-confirmed within 60 days are not shown.

StoreConditionFinishPriceChecked
Card KingdomNM · foil · todayNMfoil$10.99today
CardTraderNM · foil · 38 days agoNMfoil€13.2138 days ago
CardmarketNM · todayNMregular€15.51today
CardmarketNM · foil · todayNMfoil€15.67today
CardTraderSP · 38 days agoSPregular€16.7438 days ago
CardTraderNM · 38 days agoNMregular€16.7538 days ago
CardTraderSP · foil · 38 days agoSPfoil€30.3938 days ago

Truncated: 2 further offers are available at a higher price in the same conditions, out of 9 in total.

Format legality

  • standard: not legal
  • pioneer: not legal
  • modern: not legal
  • legacy: legal
  • vintage: legal
  • commander: legal
  • pauper: not legal
  • brawl: not legal

In Gestic collections

  • Held in 23 lists
  • Played in 2 decks

Decks that play this card

Browse all decks

All printings

Set#RarityUSD
Secret Lair Drop#1558 · mythic1558mythic$14.89
Commander 2020#11 · mythic11mythic$2.52