Saffi Eriksdotter, Metamorphosis Fanatic, and Hammerhead, Maggia Boss

Prerequisites

• Saffi Eriksdotter on the battlefield
• Metamorphosis Fanatic on the battlefield
• Hammerhead, Maggia Boss on the battlefield

Steps

1. Activate Saffi by sacrificing it, targeting Metamorphosis Fanatic Activate Hammerhead by sacrificing Metamorphosis Fanatic When Metamorphosis Fanatic dies, Saffi triggers, returning Metamorphosis Fanatic from your graveyard to the battlefield
2. When Metamorphosis Fanatic enters, it triggers, returning Saffi from your graveyard to the battlefield
3. Resolve the Hammerhead ability
4. Repeat

Results

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