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

Prerequisites

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

Steps

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

Results

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