Ulalek, Fused Atrocity | Strionic Resonator | Spawn-Gang Commander

Cards

Spawn-Gang Commander in hand.
Ulalek and
Strionic Resonator on the battlefield.
({5} magic symbol) ({C} magic symbol) ({C} magic symbol) ({R} magic symbol) ({R} magic symbol) available.

Cast
Spawn-Gang Commander by paying ({3} magic symbol) ({R} magic symbol) ({R} magic symbol) .
Ulalek and
Spawn-Gang Commander trigger.
Holding priority, activate
Strionic Resonator by paying ({2} magic symbol) and tapping it, copying
Ulalek's trigger.
Resolve the copy of
Ulalek's trigger, causing you to pay ({C} magic symbol) ({C} magic symbol) to copy the
Spawn-Gang Commander spell,
Ulalek's trigger and
Spawn-Gang Commander's trigger.
Resolve the copy of the
Spawn-Gang Commander spell.
Resolve the copy of
Spawn-Gang Commander's trigger, creating three 0/1 Eldrazi Spawn creature tokens.
Activate two Eldrazi Spawn creature tokens by sacrificing them, adding ({C} magic symbol) ({C} magic symbol) .
Resolve the copy of
Ulalek's trigger from step 4, causing you to pay ({C} magic symbol) ({C} magic symbol) to copy the
Spawn-Gang Commander spell,
Ulalek's trigger and
Spawn-Gang Commander's trigger.
Repeat from step 5.
Once you have infinite ({C} magic symbol) and Eldrazi Spawn tokens, you may sacrifice them to
Spawn-Gang Commander to deal infinite damage to any target(s).