Koll, the Forgemaster + Dissection Tools + Myr Moonvessel + Grafted Wargear

Koll, the Forgemaster

Dissection Tools

Myr Moonvessel

Grafted Wargear

How it works

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