Kiki-Jiki, Mirror Breaker, Agatha's Soul Cauldron, and Goblin Sharpshooter

Prerequisites

• Kiki-Jiki, Mirror Breaker in exile
• Agatha's Soul Cauldron on the battlefield
• Goblin Sharpshooter on the battlefield
• Goblin Sharpshooter has at least one +1/+1 counter on it

Steps

1. Activate Goblin Sharpshooter using Kiki-Jiki's ability by tapping it, creating a token copy of Goblin Sharpshooter with haste
2. Activate the token Goblin Sharpshooter by tapping it, dealing 1 damage to itself
3. The token Goblin Sharpshooter dies as a state-based action due to having 0 toughness, triggering the nontoken Goblin Sharpshooter, untapping the nontoken Goblin Sharpshooter
4. Repeat

Results

• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers