Koll, the Forgemaster + Dissection Tools + Grafted Wargear + Shambling Ghast

Koll, the Forgemaster

Dissection Tools

Grafted Wargear

Shambling Ghast

How it works

1. Activate Grafted Wargear's equip ability by paying 0, attaching it to Shambling Ghast.
2. Activate Dissection Tools by sacrificing Shambling Ghast, targeting Koll.
3. When Shambling Ghast dies, it and Koll trigger.
4. Resolve the Shambling Ghast trigger, creating a Treasure token.
5. Resolve the Koll trigger, returning it from your graveyard to your hand.
6. Resolve the Dissection Tools ability, attaching it to Koll.
7. Activate the Treasure by tapping and sacrificing it, adding .
8. Cast Shambling Ghast by paying its mana cost.
9. Repeat.