Metamorphosis Fanatic, Ashnod's Altar, and Glorious Protector

Prerequisites

• Metamorphosis Fanatic in hand
• Ashnod's Altar on the battlefield
• Glorious Protector in the graveyard
• available

Steps

1. Cast Metamorphosis Fanatic by paying
2. When Metamorphosis Fanatic enters, it triggers, returning Glorious Protector from your graveyard to the battlefield
3. When Glorious Protector enters, it triggers, exiling Metamorphosis Fanatic until Glorious Protector leaves the battlefield
4. Activate Ashnod's Altar by sacrificing Glorious Protector
5. When Glorious Protector leaves the battlefield, Metamorphosis Fanatic is returned from exile to the battlefield
6. Repeat from step 2

Results

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