How can you create a combo with Myr Welder, Biotransference, Empowered Autogenerator, Merrow Grimeblotter?
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[START OF COMBO]This combo can be formed with Myr Welder, Biotransference, Empowered Autogenerator, Merrow Grimeblotter

Color identity: UB
Mana cost: {1} (at most)
Steps:
  1. Activate Myr Welder using Empowered Autogenerator's ability by tapping it, putting a charge counter on Myr Welder and adding {U} or {B} for each charge counter on Myr Welder.
  2. Activate Myr Welder using Merrow Grimeblotter's ability by paying {1}{U/B} and untapping it, giving target creature -2/-0 until end of turn.
  3. Repeat.[END OF COMBO STEPS]

Result:
  - Infinite charge counters on Myr Welder
  - Infinite colored mana[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Myr Welder must be on the battlefield
  - Biotransference must be on the battlefield
  - Empowered Autogenerator must be exiled
  - Merrow Grimeblotter must be exiled
  - Myr Welder does not have summoning sickness.
[END OF COMBO PREREQUISITES]
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