Ghave, Guru of Spores, Cryptic Trilobite, and Sigil Captain

Prerequisites

• Ghave, Guru of Spores on the battlefield
• Cryptic Trilobite on the battlefield
• Sigil Captain on the battlefield
• Cryptic Trilobite has at least four +1/+1 counters

Steps

1. Activate Cryptic Trilobite's first ability by removing two +1/+1 counters from it, adding
2. Activate Ghave's first ability by paying and removing a +1/+1 counter from Cryptic Trilobite, creating a 1/1 Saproling creature token
3. The Saproling enters the battlefield, triggering Sigil, putting two +1/+1 counters on the Saproling
4. Activate Ghave's first ability by paying and removing a +1/+1 counter from a Saproling, creating a 1/1 Saproling creature token
5. The Saproling enters the battlefield, triggering Sigil Captain, putting two +1/+1 counters on the Saproling
6. Activate Ghave's second ability by paying and sacrificing a Saproling token, putting a +1/+1 counter on Cryptic Trilobite
7. Activate Cryptic Trilobite's first ability by removing a +1/+1 counter from it, adding
8. Repeat from step 4

Results

• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers