Agatha's Soul Cauldron, Kiki-Jiki, Mirror Breaker, and Good-Fortune Unicorn

Prerequisites

• Agatha's Soul Cauldron on the battlefield
• Kiki-Jiki, Mirror Breaker in exile
• Good-Fortune Unicorn on the battlefield
• You control at least one nonlegendary creature
• You control at least one creature that has at least one +1/+1 counter on it and that does not have summoning sickness

Steps

1. Activate a creature you control with a +1/+1 counter on it using Kiki-Jiki's ability by tapping it, creating a token copy of any nonlegendary creature you control with haste
2. When the creature token enters the battlefield, Good-Fortune Unicorn triggers, putting a +1/+1 counter on it
3. Repeat

Results

• Infinite creature tokens with haste
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers