Agatha's Soul Cauldron + Kiki-Jiki, Mirror Breaker + Cathars' Crusade
Infinite creature tokens with haste, Infinite death triggers, Infinite ETB, Infinite LTB, Infinite sacrifice triggers, Infinite +1/+1 counters on creatures you control
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.
When the creature token enters the battlefield, Cathars' Crusade triggers, putting a +1/+1 counter on each creature you control.
Repeat.
Component Cards
How It Works
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.
When the creature token enters the battlefield, Cathars' Crusade triggers, putting a +1/+1 counter on each creature you control.
Repeat.