Kurkesh, Onakke Ancient + Chromatic Orrery + Manifold Key + Sonic Screwdriver

Kurkesh, Onakke Ancient

Chromatic Orrery

Manifold Key

Sonic Screwdriver

How it works

1. Activate Chromatic Orrery's first ability by tapping it, adding CCCCC.
2. Activate Manifold Key's first ability by paying 1 and tapping it, targeting Chromatic Orrery.
3. Kurkesh triggers, causing you to pay 1 to copy Manifold Key's ability, targeting Sonic Screwdriver.
4. Resolve both Manifold Key abilities, untapping Chromatic Orrery and Sonic Screwdriver.
5. Activate Chromatic Orrery's first ability by tapping it, adding CCCCC.
6. Activate Sonic Screwdriver's second ability by paying 1 and tapping it, targeting Chromatic Orrery.
7. Kurkesh triggers, causing you to pay 1 to copy Sonic Screwdriver's ability, targeting Manifold Key.
8. Resolve both Sonic Screwdriver abilities, untapping Chromatic Orrery and Manifold Key.
9. Repeat.
10. Once you have infinite mana, you may activate Chromatic Orrery's second ability instead.