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.
Enchant creatureWhen Paralyze enters, tap enchanted creature.Enchanted creature doesn't untap during its controller's untap step.At the beginning of the upkeep of enchanted creature's controller, that player may pay . If the player does, untap the creature.
Enchant enchantmentAt the beginning of the upkeep of enchanted enchantment's controller, that player may pay any amount of mana. Power Leak deals 2 damage to that player. Prevent X of that damage, where X is the amount of mana that player paid this way.
Counter target spell unless its controller pays . If that player doesn't, they tap all lands with mana abilities they control and lose all unspent mana.
At the beginning of each end step, put a corpse counter on Scavenging Ghoul for each creature that died this turn.Remove a corpse counter from Scavenging Ghoul: Regenerate Scavenging Ghoul.