Ghave, Guru of Spores, Mazirek, Kraul Death Priest, and Crystalline Crawler

Prerequisites

• Ghave, Guru of Spores on the battlefield
• Mazirek, Kraul Death Priest on the battlefield
• Crystalline Crawler on the battlefield
• Crystalline Crawler has at least two +1/+1 counters on it
• At least one additional +1/+1 counter on any creature

Steps

1. Activate Crystalline Crawler's first ability twice by removing two +1/+1 counters from it, adding
2. Activate Ghave's first activated ability by paying and removing a +1/+1 counter from any creature, creating a 1/1 Saproling creature token
3. Activate Ghave's last ability by paying and sacrificing a Saproling token
4. Mazirek triggers, putting a +1/+1 counter on each creatures you control
5. Resolve the Ghave ability, putting a +1/+1 counter on Crystalline Crawler
6. Repeat

Results

• Infinite +1/+1 counters on all creatures you control except Crystalline Crawler
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers