Koll, the Forgemaster + Demonmail Hauberk + Memnite + Shield Sphere

Koll, the Forgemaster

Demonmail Hauberk

Memnite

Shield Sphere

How it works

1. Activate Demonmail Hauberk's equip ability by sacrificing Memnite, targeting Shield Sphere.
2. When Memnite dies, Koll triggers, returning Memnite from your graveyard to your hand.
3. Resolve the Demonmail Hauberk ability, attaching it to Shield Sphere.
4. Cast Memnite by paying 0.
5. Activate Demonmail Hauberk's equip ability by sacrificing Shield Sphere, targeting Memnite.
6. When Shield Sphere dies, Koll triggers, returning Shield Sphere from your graveyard to your hand.
7. Resolve the Demonmail Hauberk ability, attaching it to Memnite.
8. Cast Shield Sphere by paying 0.
9. Repeat.