Ulalek, Fused Atrocity + Glaring Fleshraker + Roaming Throne

Ulalek, Fused Atrocity

Glaring Fleshraker

Roaming Throne

How it works

1. Cast any colorless Eldrazi spell by paying its mana cost, triggering Ulalek twice and Glaring Fleshraker's first ability twice.
2. Resolve a Ulalek trigger, causing you to pay CC to copy the colorless spell, the remaining Ulalek trigger and both Glaring Fleshraker triggers.
3. Resolve the first Glaring Fleshraker trigger, creating a 0/1 Eldrazi Spawn creature token.
4. When the Eldrazi Spawn enters the battlefield, Glaring Fleshraker's second ability triggers, dealing 1 damage to each opponent.
5. Activate the Eldrazi Spawn by sacrificing it, adding C.
6. Repeat from step 3 one additional time.
7. Repeat from step 2.