Agatha's Soul Cauldron + Grumgully, the Generous + Krenko, Mob Boss + Hammer of Purphoros

Agatha's Soul Cauldron

Grumgully, the Generous

Krenko, Mob Boss

Hammer of Purphoros

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 feeding your legendary goblin into Agatha's Soul Cauldron, you grant its activated ability to every creature in your army, letting Krenko, Mob Boss tap over and over to multiply your forces at will. This loop is endlessly sustained because Grumgully, the Generous ensures every new token hits the battlefield with the vital +1/+1 counter needed to immediately reactivate the Cauldron's shared ability. Meanwhile, Hammer of Purphoros quietly pulls double duty by granting your newly minted horde immediate haste so they can charge straight into the red zone without waiting around.