Moritte of the Frost, Lesser Masticore, and Ashnod's Altar

Prerequisites

• Moritte of the Frost on the battlefield
• Lesser Masticore on the battlefield
• Ashnod's Altar on the battlefield

Steps

1. Activate Ashnod's Altar by sacrificing Moritte of the Frost, adding
2. Moritte of the Frost dies, triggering its persist ability, returning it to the battlefield as a copy of Lesser Masticore with two +1/+1 counters and one -1/-1 counter on it
3. Remove one +1/+1 counter and one -1/-1 counter from Moritte of the Frost as a state-based action
4. Repeat
5. Once you have infinite mana, you may activate Lesser Masticore's ability any number of times to deal infinite damage to any creature(s)

Results

• Infinite colorless mana
• Infinite damage to creatures
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers