Rowan, Scion of War + Thermopod + Sedgemoor Witch + Searing Touch

Rowan, Scion of War

Thermopod

Sedgemoor Witch

Searing Touch

How it works

1. Activate Rowan by tapping it, reducing the cost of all black and/or red spells you cast this turn by at least 4.
2. Cast Searing Touch with buyback by paying due to Rowan's ability, targeting any applicable target.
3. Sedgemoor Witch triggers, creating a 1/1 Pest creature token.
4. Resolve Searing Touch, dealing 1 damage to any target and returning Searing Touch to your hand.
5. Activate Thermopod's second ability by sacrificing the Pest, adding .
6. When the Pest dies, it triggers, causing you to gain 1 life.
7. Repeat from step 2.

This clever engine turns Rowan, Scion of War into a massive cost-reducer by leveraging life loss, though here the loop is neatly self-contained once the pieces are in place. By casting Searing Touch with its buyback cost heavily discounted by Rowan, you trigger Sedgemoor Witch's magecraft ability to spawn a Pest token every single iteration. That token is immediately fed to Thermopod to generate the red mana needed to recast the spell, while the Pest's dying trigger simultaneously loops life back to you.