Ich-Tekik, Salvage Splicer + Arcbound Reclaimer + Mystic Forge + Dark Sphere

Ich-Tekik, Salvage Splicer

Arcbound Reclaimer

Mystic Forge

Dark Sphere

How it works

1. Activate Dark Sphere by tapping and sacrificing it.
2. Ich-Tekik's second ability triggers, putting a +1/+1 counter on it and each Golem you control.
3. Activate Arcbound Reclaimer by removing a +1/+1 counter from it, putting Dark Sphere from your graveyard onto the top of your library.
4. Cast Dark Sphere from the top of your library by paying 0.
5. Repeat.

This crafty loop relies on Mystic Forge granting you the ability to continually cast Dark Sphere straight from the top of your library for zero mana. Once Dark Sphere is sacrificed, Ich-Tekik, Salvage Splicer notices the artifact hitting the graveyard and rewards you by pumping up itself and your Golems with fresh +1/+1 counters. You can then use Arcbound Reclaimer to siphon away one of those newly minted counters, looping the sacrificed sphere right back to the top of your library to do it all over again.