Palladia-Mors II

Flying, trample
Whenever Palladia-Mors II deals combat damage to a player, add {r}{r}{g}{g}{w}{w} to your mana pool. Until end of turn, this mana doesn't leave your mana pool as steps and phases end.
At the beginning of your upkeep, you may pay {r}{g}{w}. If you don't, sacrifice Palladia-Mors II. It can't be regenerated.