Yidaro, Wandering Monster, Grinning Ignus, Agatha's Soul Cauldron, and Cathars' Crusade

Prerequisites

• Yidaro, Wandering Monster in hand
• Grinning Ignus in exile
• Agatha's Soul Cauldron on the battlefield
• Cathars' Crusade on the battlefield
• You have cycled Yidaro at least three times this game
• available

Steps

1. Activate Yidaro's cycling ability by paying and discarding it
2. Yidaro triggers, putting it from your graveyard onto the battlefield
3. When Yidaro enters the battlefield, Cathars' Crusade triggers, putting a +1/+1 counter on Yidaro
4. Resolve the Yidaro cycling ability, causing you to draw a card
5. Activate Yidaro using Grinning Ignus's ability by paying and returning Yidaro from the battlefield to your hand, adding
6. Repeat

Results

• Infinite card draw
• Near-infinite ETB
• Infinite draw triggers
• Near-infinite self-discard triggers
• Near-infinite LTB