Koll, the Forgemaster + Deathrender + Reckless Barbarian

Koll, the Forgemaster

Deathrender

Reckless Barbarian

How it works

1. Activate Reckless Barbarian by sacrificing it, adding .
2. When Reckless Barbarian dies, Koll and Deathrender trigger.
3. Resolve the Koll trigger, returning Reckless Barbarian from your graveyard to your hand.
4. Resolve the Deathrender trigger, putting Reckless Barbarian from your hand onto the battlefield and attaching Deathrender to it.
5. Repeat.