Twins of Discord

Whenever you attack, choose odd or even. Creatures with mana value of that quality can't block this turn. (Zero is even.)
Each other colorless creature you control has bloodthirst 2. (If an opponent was dealt damage this turn, that creature enters with two additional +1/+1 counters on it.)

Immer wenn du angreifst, bestimme gerade oder ungerade. Kreaturen mit entsprechendem Manabetrag können in diesem Zug nicht blocken.
Jede andere farblose Kreatur, die du kontrollierst, hat Blutdurst 2.