Sethron, Hurloon General + Cloudstone Curio + Ragemonger + Slaughter-Priest of Mogis

Sethron, Hurloon General

Cloudstone Curio

Ragemonger

Slaughter-Priest of Mogis

How it works

1. Cast Slaughter-Priest of Mogis by paying 0 due to Ragemonger.
2. When Slaughter-Priest of Mogis enters the battlefield, Sethron and Cloudstone Curio trigger.
3. Resolve the Cloudstone Curio trigger, choosing to return nothing to your hand.
4. Resolve the Sethron trigger, creating a 2/3 Minotaur creature token.
5. When the Minotaur token enters the battlefield, Cloudstone Curio triggers, returning Slaughter-Priest of Mogis to your hand from the battlefield.
6. Repeat.

This loop is a masterclass in cost reduction and bounce mechanics, anchored by Ragemonger making your Slaughter-Priest of Mogis completely free to cast. As that Minotaur enters the battlefield, Cloudstone Curio and Sethron, Hurloon General trigger in tandem, with Sethron providing a steady stream of 2/3 Minotaur tokens. Each time one of those tokens appears, Cloudstone Curio's triggered ability forces you to return your recastable Slaughter-Priest of Mogis back to your hand, resetting the loop for zero mana.