How it works
Prerequisites
- Cryptic Trilobite has at least one +1/+1 counter on it.
Steps
- 1Activate Eldrazi Displacer by paying , blinking Agent Frank Horrigan.
- 2When Agent Frank Horrigan enters the battlefield, it triggers, causing you to put two +1/+1 counters on Cryptic Trilobite.
- 3Activate Crystalline Crawler's first ability twice by removing two +1/+1 counters from it, adding that can only be spent to activate abilities.
- 4Repeat.
Commander brackets
In which brackets is this combo allowed, per Spellbook's Exhibition tier?