Celindra, the Crimson Dawn

Vigilance, first strike, menace
At the beginning of combat on your turn, you
may pay 3 life. If you do, Celindra, the Crimson
Dawn gains +3/+3 until end of turn.
When Celindra, the Crimson Dawn deals combat damage to a player, you may draw a card. If you
do, discard a card.