Ulalek, Fused Atrocity, Annie Joins Up, and Writhing Chrysalis

Prerequisites

• Ulalek, Fused Atrocity on the battlefield
• Annie Joins Up on the battlefield
• Writhing Chrysalis in hand
• available

Steps

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

Results

• Infinite LTB
• Infinite ETB
• Infinite sacrifice triggers
• Infinite death triggers
• Infinite colorless mana
• Infinite creature tokens
• Infinite copies of abilities you control on the stack
• Infinite +1/+1 counters on an infinite number of creature tokens