Hell's Caretaker + Body Double + Barbarian Class

Hell's Caretaker

Body Double

Barbarian Class

How it works

1. During your upkeep, activate Hell's Caretaker by tapping and sacrificing it, returning Body Double from your graveyard to the battlefield as a copy of Hell's Caretaker.
2. Activate Body Double by tapping and sacrificing it, returning Hell's Caretaker from your graveyard to the battlefield.
3. Repeat.

This clever recursive loop relies on the constant mutual resurrection between Hell's Caretaker and Body Double, where each sacrifices the other during your upkeep to continually swap places from the graveyard back to the battlefield. Because Body Double enters as a copy of Hell's Caretaker, it retains the exact same activated ability needed to keep the cycle going indefinitely. While the core engine runs completely on just those two cards, Barbarian Class sits on the battlefield providing its static and triggered abilities as a wonderful bonus, turning every single iteration of this infinite loop into a buffed, menacing assault if you happen to roll dice along the way.