Evolution Witness, Myr Scrapling, and Pitiless Plunderer

Prerequisites

• Evolution Witness on the battlefield
• Myr Scrapling on the battlefield
• Pitiless Plunderer on the battlefield

Steps

1. Activate Myr Scrapling by sacrificing it, targeting Evolution Witness
2. When Myr Scrapling dies, Pitiless Plunderer triggers, creating a Treasure token
3. Resolve the Myr Scrapling ability, putting a +1/+1 counter on Evolution Witness
4. Evolution Witness triggers, returning Myr Scrapling from your graveyard to your hand
5. Activate the Treasure by tapping and sacrificing it, adding
6. Cast Myr Scrapling by paying
7. Repeat

Results

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