Infinite colorless mana, Infinite death triggers, Infinite ETB, Infinite LTB, Infinite sacrifice triggers
Activate Ashnod's Altar by sacrificing the Undying creature, adding .
When the creature dies, its Undying ability triggers, returning it from your graveyard to the battlefield.
When the creature enters the battlefield, Denry triggers, putting a -1/-1 counter on it.
Remove the -1/-1 and the +1/+1 counter from the Undying creature as a state-based action.
Repeat.
Note that this combo has additional results depending on the Undying creature.
Component Cards
How It Works
Activate Ashnod's Altar by sacrificing the Undying creature, adding .
When the creature dies, its Undying ability triggers, returning it from your graveyard to the battlefield.
When the creature enters the battlefield, Denry triggers, putting a -1/-1 counter on it.
Remove the -1/-1 and the +1/+1 counter from the Undying creature as a state-based action.
Repeat.
Note that this combo has additional results depending on the Undying creature.