Olivia, Mobilized for War
Legendary Creature - Vampire Knight | Power/Toughness: 3 / 3 (CMC 3)
Whenever another creature enters the battlefield under your control, 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.
- [PSOI] Shadows over Innistrad Promos #248s (M)