Evolution Witness, Sadistic Glee, and Blood Pet

Prerequisites

• Evolution Witness on the battlefield
• Sadistic Glee on the battlefield
• Blood Pet on the battlefield

Steps

1. Cast Blood Pet by paying its mana cost
2. Activate Blood Pet by sacrificing it, adding
3. When Blood Pet dies, Sadistic Glee triggers, putting a +1/+1 counter on Evolution Witness
4. Evolution Witness triggers, returning Blood Pet from your graveyard to your hand
5. Repeat

Results

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