Zimone, Quandrix Prodigy + Retreat to Coralhelm + Rakdos Carnarium + Lotus Cobra

Zimone, Quandrix Prodigy

Retreat to Coralhelm

Rakdos Carnarium

Lotus Cobra

How it works

1. Activate Zimone's first ability by paying 1 and tapping it, putting Rakdos Carnarium from your hand onto the battlefield.
2. When Rakdos Carnarium enters the battlefield, it, Retreat to Coralhelm and Lotus Cobra trigger
3. Resolve the Lotus Cobra trigger, adding 1.
4. Resolve the Rakdos Carnarium trigger from step 2, returning it from the battlefield to your hand.
5. Resolve the Retreat to Coralhelm trigger, untapping Zimone.
6. Repeat.