Agatha's Soul Cauldron + Grumgully, the Generous + Krenko, Mob Boss + Urabrask the Hidden

Agatha's Soul Cauldron

Grumgully, the Generous

Krenko, Mob Boss

Urabrask the Hidden

How it works

1. Activate a creature with a +1/+1 counter on it, creating a 1/1 red Goblin creature token.
2. The 1/1 Goblin token enters with a +1/+1 counter on it due to Grumgully's ability.
3. Repeat.

By using Agatha's Soul Cauldron to exile Krenko, Mob Boss from the graveyard, we grant its explosive token-producing activated ability to any creature we control that bears a +1/+1 counter. Grumgully, the Generous ensures that every newly created Goblin token naturally enters the battlefield with a +1/+1 counter already on it, which in turn immediately arms those fresh tokens with the borrowed Krenko ability. Meanwhile, Urabrask the Hidden ensures our growing horde can tap right away and keeps opposing threats safely entering the battlefield tapped. The result is an unstoppable, self-sustaining loop that floods the board with infinite tapped Goblin tokens and creature enters-the-battlefield triggers.