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.
Flying (This creature can't be blocked except by creatures with flying or reach.): Vampire Bats gets +1/+0 until end of turn. Activate no more than twice each turn.
: Regenerate Drudge Skeletons. (The next time this creature would be destroyed this turn, instead tap it, remove it from combat, and heal all damage on it.)
FlyingAt the beginning of each end step, if a creature died this turn, put a carrion counter on Osai Vultures.Remove two carrion counters from Osai Vultures: Osai Vultures gets +1/+1 until end of turn.
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.