Ulalek, Fused Atrocity + Strionic Resonator + Writhing Chrysalis
Ulalek, Fused Atrocity
Strionic Resonator
Writhing Chrysalis
Requires
Ulalek, Fused Atrocity must be on the battlefield.
Strionic Resonator must be on the battlefield.
Writhing Chrysalis must be in hand.
Mana needed: 
Steps
- Cast Writhing Chrysalis by paying
. - Ulalek and Writhing Chrysalis' first ability trigger.
- Holding priority, activate Strionic Resonator by paying and tapping it, copying Ulalek's trigger.
- Resolve the copy of Ulalek's trigger, causing you to pay 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 .
- 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 to copy the Writhing Chrysalis spell, Ulalek's trigger and Writhing Chrysalis' trigger.
- Repeat from step 5.
Results
Infinite +1/+1 counters on an infinite number of creature tokens. Infinite copies of abilities you control on the stack. Infinite creature tokens. Infinite death triggers. Infinite ETB. Infinite LTB. Infinite sacrifice triggers.
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