Olivia, Mobilized for War

Olivia, Mobilized for War {1}{B}{R}

Legendary Creature - Vampire Knight | Power/Toughness: 3 / 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.