Emiel the Blessed + Norn's Choirmaster + Crystalline Crawler + Cryptic Trilobite

Emiel the Blessed

Norn's Choirmaster

Crystalline Crawler

Cryptic Trilobite

How it works

1. Activate Emiel by paying 3, blinking your commander.
2. Your commander enters the battlefield, triggering Norn's Choirmaster, putting a +1/+1 counter on Cryptic Trilobite and Crystalline Crawler.
3. Activate Crystalline Crawler's first ability by removing a +1/+1 counter from it, adding 1.
4. Activate Cryptic Trilobite's first ability by removing a +1/+1 counter from it, adding CC that can only be spent to activate abilities.
5. Repeat.