Urtet, Remnant of Memnarch, Crystalline Crawler, Pemmin's Aura, Maskwood Nexus, and Doubling Season

Prerequisites

• Urtet, Remnant of Memnarch on the battlefield
• Crystalline Crawler on the battlefield
• Pemmin's Aura on the battlefield
• Maskwood Nexus on the battlefield
• Doubling Season on the battlefield
• Pemmin's Aura attached to Urtet
• Urtet does not have summoning sickness
• It is your turn
• available

Steps

1. Activate Urtet by paying and tapping it, putting six +1/+1 counters on each creature you control, as they are all Myrs due to Maskwood Nexus
2. Activate Crystalline Crawler's first ability six times by removing six +1/+1 counters from it, adding
3. Activate Pemmin's Aura's first ability by paying , untapping Urtet
4. Repeat

Results

• Infinite +1/+1 counters on all creatures you control except Crystalline Crawler