Crystalline Crawler + Earthcraft + Gilder Bairn

Mana needed: {1} if you control a basic Forest and/or Island, or {G/U} available otherwise

GU identity

Commander legal

The 3 combo pieces

What must be in place

Crystalline Crawler has at least three +1/+1 counters on it.
You control at least one basic land.

How to execute it

  1. Activate a basic land by tapping it, adding {1}.
  2. Activate Earthcraft by tapping Gilder Bairn, untapping the basic land.
  3. Activate the basic land by tapping it, adding {1}.
  4. Activate Gilder Bairn by paying {2}{G/U} and untapping it, doubling each counter on Crystalline Crawler.
  5. Activate Crystalline Crawler's first ability twice by removing two +1/+1 counters from it, adding {1}{G/U}.
  6. Repeat from step 2.
  7. 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