MTG >Combos >Retribution of the Ancients +Geralf's Messenger +Phyrexian Altar +

Sacrifice Geralf's Messenger with Phyrexian Altar to add one black mana Undying ability will trigger, return Geralf's Messenger to the battlefield with a +1/+1 counter Geralf's Messenger's ability will deal 2 damage to the opponent Pay one black mana to remove a +1/+1 counter from Geralf's Messenger with Retribution of the Ancients repeat the process