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

Prerequisites

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

Steps

1. Cast Changeling Hero by paying
2. Changeling Hero 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 Hero with haste
4. The token Changeling Hero enters the battlefield, championing the nontoken Changeling Hero
5. The nontoken Changeling Hero leaves the battlefield, returning nothing from exile to the battlefield
6. Resolve the nontoken Changeling Hero 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 Hero token leaves the battlefield, returning the nontoken Changeling Hero from exile to the battlefield
9. Repeat from step 2

Results

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