Sylitera of the Shattered Veil

Trample
At the beginning of combat on your turn,
any player may discard a creature card. If a
player does, put two +1/+1 counter on
Sylitera and tap her.
{1}{b}, {t}, Remove two +1/+1 counters from
Sylitera: Destroy target creature, draw a card,
and gain 3 life.