The Omega Myr

All Myr you control get +2/+2.
Whenever you cast a Myr, choose one -
• If you payed {w}, put a +1/+1 counter on it.
• If you payed {u}, scry 1.
• If you payed {b}, put a -1/-1 counter on target
non-Myr creature.
{bull} If you payed {r}, deal 1 damage to any target.
{bull} If you payed {g}, add {c} to your mama pool.