Avemina, Silencer

First Strike, Haste.
When Avemina deals combat damage to a player,
you may pay {x}{r}{b}{b}. If you do, Avemina deals
X damage to that player.
{r}, Pay 3 life: Whenever Avemina attacks this
turn, Avemina deals 2 damage to any target.
{1}{r}{b}: Choose an opponent. If that player
attacks you with 2 or more creatures, they lose
life equal to half the total amount of attacking
creatures they control.