Morophon, the Boundless, Honest Rutstein, and Hulking Metamorph

Prerequisites

• Morophon, the Boundless on the battlefield
• Honest Rutstein on the battlefield
• Hulking Metamorph on the battlefield
• available

Steps

1. Cast Hulking Metamorph by paying its prototype cost
2. Choose to have it enter as a copy of Honest Rutstein
3. Put Honest Rutstein into your graveyard due to the legend rule
4. Hulking Metamorph triggers, returning Honest Rutstein from your graveyard to your hand
5. Cast Honest Rutstein by paying due to Morophon and Hulking Metamorph
6. Put Honest Rutstein into your graveyard due to the legend rule
7. Honest Rutstein triggers, returning it from your graveyard to your hand
8. Repeat from step 4

Results

• Infinite ETB
• Infinite LTB
• Infinite death triggers
• Infinite storm count