Metamorphosis Fanatic, Phantom Train, and Wormfang Drake

Prerequisites

• Metamorphosis Fanatic in hand
• Phantom Train on the battlefield
• Wormfang Drake in the graveyard
• available

Steps

1. Cast Metamorphosis Fanatic by paying
2. When Metamorphosis Fanatic enters, it triggers, returning Wormfang Drake from your graveyard to the battlefield
3. When Wormfang Drake enters, it triggers, exiling Metamorphosis Fanatic
4. Activate Phantom Train by sacrificing Wormfang Drake
5. When Wormfang Drake dies, it triggers, returning Metamorphosis Fanatic from exile to the battlefield
6. Repeat from step 2
7. Resolve all Phantom Train abilities

Results

• Infinite LTB
• Infinite ETB
• Infinite sacrifice triggers
• Infinite death triggers
• Infinite +1/+1 counters on a creature