Cacophodon + Guilty Conscience + Power of Fire

Cacophodon

Guilty Conscience

Power of Fire

How it works

1. Activate Cacophodon by tapping it, dealing damage to any target.
2. Guilty Conscience triggers, dealing damage to Cacophodon.
3. Cacophodon triggers, untapping itself.
4. Repeat.

This delightful three-card loop turns Cacophodon into a self-sustaining artillery piece by pairing it with Power of Fire, which grants it the tap ability to ping any target. Because Guilty Conscience watches for damage dealt by the enchanted creature and reflexively bounces that exact same amount right back at it, every single point of damage triggers Cacophodon's Enrage ability. That Enrage trigger neatly untaps Cacophodon so you can immediately tap it again, letting you repeat this closed loop indefinitely to deal infinite damage to your opponents.