Ulalek, Fused Atrocity | Lithoform Engine | Writhing Chrysalis

Cards

Writhing Chrysalis in hand.
Ulalek and
Lithoform Engine on the battlefield.
({4} magic symbol) ({C} magic symbol) ({C} magic symbol) ({R} magic symbol) ({G} magic symbol) available.

Cast
Writhing Chrysalis by paying ({2} magic symbol) ({R} magic symbol) ({G} magic symbol) .
Ulalek and
Writhing Chrysalis' first ability trigger.
Holding priority, activate
Lithoform Engine's first ability 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
Writhing Chrysalis spell,
Ulalek's trigger and
Writhing Chrysalis' trigger.
Resolve the copy of the
Writhing Chrysalis spell.
Resolve the copy of
Writhing Chrysalis' trigger, creating two 0/1 Eldrazi Spawn creature tokens.
Activate both Eldrazi Spawn creature tokens by sacrificing it, adding ({C} magic symbol) ({C} magic symbol) .
Each
Writhing Chrysalis you control triggers twice, putting two +1/+1 counters on each of them.
Resolve the copy of
Ulalek's trigger from step 4, causing you to pay ({C} magic symbol) ({C} magic symbol) to copy the
Writhing Chrysalis spell,
Ulalek's trigger and
Writhing Chrysalis' trigger.
Repeat from step 5.