Kiki-Jiki, Mirror Breaker, Ashnod's Altar, and Fiend Hunter

Prerequisites

• Kiki-Jiki, Mirror Breaker on the battlefield
• Ashnod's Altar on the battlefield
• Fiend Hunter on the battlefield

Steps

1. Activate Kiki-Jiki by tapping it, creating a token copy of Fiend Hunter
2. When the Fiend Hunter token enters the battlefield, it triggers, exiling Kiki-Jiki until Fiend Hunter leaves the battlefield
3. Activate Ashnod's Altar by sacrificing the Fiend Hunter token, adding
4. When the Fiend Hunter token dies, it triggers, returning Kiki-Jiki from exile to the battlefield
5. Repeat

Results

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