Olivia, Mobilized for War
From Shadows over Innistrad set
Olivia, Mobilized for War
Legendary Creature — Vampire Knight
3/3
Flying
Whenever another creature you control enters, you may discard a card. If you do, put a +1/+1 counter on that creature, it gains haste until end of turn, and it becomes a Vampire in addition to its other types.
