Ulalek, Fused Atrocity + Writhing Chrysalis + Eldritch Immunity

Prerequisites

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Steps

1. 1Cast Writhing Chrysalis by paying . Ulalek and Writhing Chrysalis' first ability trigger.
2. 2Holding priority, cast Eldritch Immunity by paying .
3. 3Ulalek triggers, causing you to pay to copy the Writhing Chrysalis spell, Ulalek's trigger and Writhing Chrysalis' trigger.
4. 4Resolve the copy of Writhing Chrysalis' trigger, creating two 0/1 Eldrazi Spawn creature tokens.
5. 5Activate both Eldrazi Spawn creature tokens by sacrificing it, adding .
6. 6Resolve 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.
7. 7Repeat from step 4.

Effects

• Infinite copies of abilities you control on the stack
• Infinite creature tokens
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers