Eria, the Bloodied.

Whenever another creature enters the battlefield,
Eria, the bloodied gains double strike and haste
until end of turn.
Pay 2 life: Warrior and Berserker creatures you control gain +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.