Yidaro, Wandering Monster + Grinning Ignus + Agatha's Soul Cauldron + Grumgully, the Generous

Yidaro, Wandering Monster

Grinning Ignus

Agatha's Soul Cauldron

Grumgully, the Generous

How it works

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