Ulalek, Fused Atrocity | Abstruse Archaic | Writhing Chrysalis

Cards

Writhing Chrysalis in hand.
Ulalek and
Abstruse Archaic on the battlefield.
Abtruse Archaic does not have summoning sickness.
({3} magic symbol) ({R} magic symbol) ({G} magic symbol) ({C} magic symbol) ({C} magic symbol) ({C} magic symbol) ({C} magic symbol) available.

Cast
Writhing Chrysalis by paying ({2} magic symbol) ({R} magic symbol) ({G} magic symbol) .
Writhing Chrysalis and
Ulalek trigger.
Holding priority, activate
Abstruse Archaic by paying ({1} magic symbol) and tapping it, copying
Ulalek's trigger.
Resolve the copied
Ulalek trigger, causing you to pay ({C} magic symbol) ({C} magic symbol) and creating a copy of the
Writhing Chrysalis spell,
Writhing Chrysalis's trigger, and
Ulalek's trigger.
Resolve the copied
Ulalek trigger, causing you to pay ({C} magic symbol) ({C} magic symbol) and creating a copy of at least two
Writhing Chrysalis spells, at least two
Writhing Chrysalis's triggers, and
Ulalek's trigger.
Resolve a
Writhing Chrysalis trigger, creating two Eldrazi Spawn tokens.
Activate two Eldrazi Spawn tokens by sacrificing them, adding ({C} magic symbol) ({C} magic symbol) .
Repeat from 5 any number of times.
Once you have infinite copies of the spells and triggers, you can resolve them all, activate any number of Eldrazi Spawn tokens, and trigger all
Writhing Chrysalis's final abilities.

You may also perform this combo with ({C} magic symbol) ({C} magic symbol) less starting mana, skipping step 5. This does not result in infinite colorless mana or infinite creature tokens.