Infinite +1/+1 counters on a creatureInfinite colorless mana that can only be spent to activate abilitiesInfinite creature ETBInfinite creature LTBInfinite proliferate
How it works
Activate your commander by paying 1, blinking it.
Your commander enters the battlefield, triggering Deadeye Navigator's soulbond ability and Norn's Choirmaster.
Resolve the Deadeye Navigator, repairing it and your commander.
Resolve the Norn's Choirmaster trigger, putting a +1/+1 counter on Cryptic Trilobite and Crystalline Crawler.
Activate Crystalline Crawler's first ability by removing a +1/+1 counter from it, adding .
Activate Cryptic Trilobite's first ability by removing a +1/+1 counter from it, adding CC that can only be spent to activate abilities.