Cryptolith Rite + Crystalline Crawler + Gilder Bairn

Mana needed: {2}

GU identity

Commander legal

The 3 combo pieces

What must be in place

Crystalline Crawler has at least three +1/+1 counters on it.
Gilder Bairn does not have summoning sickness.

How to execute it

  1. Activate Gilder Bairn by tapping it, adding {G/U}.
  2. Activate Gilder Bairn by paying {2}{G/U} and untapping it, doubling each counter on Crystalline Crawler.
  3. Activate Crystalline Crawler's first ability twice by removing two +1/+1 counters from it, adding {2}.
  4. Repeat.
  5. Once you have infinite +1/+1 counters on Crystalline Crawler, you may instead double the counters on any other permanent(s).

What the combo produces