
Crippling Blight | Enchantment | Aura | Enchant creature
Enchanted creature gets -1/-1 and can't block. | Lucas Graciano

Eternal Thirst | Enchantment | Aura | Enchant creature
Enchanted creature has lifelink and "Whenever a creature an opponent controls dies, put a +1/+1 counter on this creature." (Damage dealt by a creature with lifelink also causes its controller to gain that much life.) | Clint Cearley