Six + Chromatic Sphere + Dakmor Salvage + Glaring Fleshraker

Six

Chromatic Sphere

Dakmor Salvage

Glaring Fleshraker

How it works

1. Cast Chromatic Sphere from your graveyard by paying 1 and discarding Dakmor Salvage.
2. Glaring Fleshraker's first ability triggers, creating a 0/1 Eldrazi Spawn creature token.
3. When the Eldrazi Spawn enters, Glaring Fleshraker's second ability triggers, dealing 1 damage to each opponent.
4. Activate the Eldrazi Spawn by sacrificing it, adding C.
5. Activate Chromatic Sphere by paying 1, tapping and sacrificing it, adding 1 and causing you to mill two cards and return Dakmor Salvage from your graveyard to your hand.
6. Repeat.

This loop turns a simple recycle cycle into an engine of absolute attrition by letting Six grant retrace to your nonland permanents, allowing you to continually recast Chromatic Sphere from the graveyard by discarding Dakmor Salvage. Every time you cast the Sphere, Glaring Fleshraker notices the colorless spell to spawn an Eldrazi Spawn token, which immediately triggers the Fleshraker's second ability to ping your opponents to death. Sacrificing that spawn for mana helps pay for the Sphere's activation, which in turn triggers Dakmor Salvage's dredge mechanic to keep feeding lands back to your hand for the next retrace iteration.