Inalla, Archmage Ritualist, Ashnod's Altar, and Changeling Berserker

Prerequisites

• Inalla, Archmage Ritualist on the battlefield or in the command zone
• Ashnod's Altar on the battlefield
• Changeling Berserker in hand
• available

Steps

1. Cast Changeling Berserker by paying
2. Changeling Berserker enters the battlefield, triggering its champion ability and Inalla
3. Resolve the Inalla trigger, causing you to pay to create a token copy of Changeling Berserker with haste
4. The token Changeling Berserker enters the battlefield, championing the nontoken Changeling Berserker
5. The nontoken Changeling Berserker leaves the battlefield, returning nothing from exile to the battlefield
6. Resolve the nontoken Changeling Berserker trigger from step 2, choosing not to exile anything
7. Activate Ashnod's Altar by sacrificing the Mistbind Clique token, adding at least one mana
8. The Changeling Berserker token leaves the battlefield, returning the nontoken Changeling Berserker from exile to the battlefield
9. Repeat from step 2

Results

• Infinite ETB
• Infinite LTB
• Infinite colorless mana
• Infinite death triggers
• Infinite sacrifice triggers