The Ebon Hand\'s Channel of Flame

Until end of turn, any time you could activate a mana ability, you may pay 1 life. If you do, add .

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.

: Add . If this ability has been activated four or more times this turn, sacrifice this creature at the beginning of the next end step.