How can you create a combo with Gilder Bairn, Cryptolith Rite, Biomancer's Familiar?
user
[START OF COMBO]This combo can be formed with Gilder Bairn, Cryptolith Rite, Biomancer's Familiar

Color identity: GU
Mana cost: 
Steps:
  1. Activate Gilder Bairn by tapping it, adding {G/U}.
  2. Activate Gilder Bairn by paying {G/U} and untapping it, doubling each counter on target permanent.
  3. Repeat.[END OF COMBO STEPS]

Result:
  - Infinite proliferate[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - All permanants must be on the battlefield
  - Gilder Bairn does not have summoning sickness.
[END OF COMBO PREREQUISITES]
assistant