Eria, the Bloodied

Haste
Whenever another creature enters the battlefield, Eria, the Bloodied gains double strike until end of turn.
Pay 2 life: Eria, the Bloodied gains +1+1 until end of turn. Activate this ability only once each turn.
You label us heretics and force war upon us. So let the 'faithless' show you how unimpeded our strength is, when nothing is blasphemy.