Spend only black mana on X.
Drain Life deals X damage to any target. You gain life equal to the damage dealt, but not more life than the player's life total before the damage was dealt, the planeswalker's loyalty before the damage was dealt, or the creature's toughness.
Near Mint - $0.75
Near Mint Non English - $0.75
Lightly Played - $0.75
Lightly Played Non English - $0.75
Moderately Played - $0.65
Moderately Played Non English - $0.65
Heavily Played - $0.60
Heavily Played Non English - $0.60
Damaged - $0.45
Damaged Non English - $0.45