How can you create a combo with Training Grounds, Basalt Monolith, Karn's Touch?
user
[START OF COMBO]This combo can be formed with Training Grounds, Basalt Monolith, Karn's Touch

Color identity: U
Mana cost: {U}{U}
Steps:
  1. Cast Karn's Touch by paying {U}{U}, causing Basalt Monolith to become an artifact creature until end of turn.
  2. Activate Basalt Monolith's first ability by tapping it, adding {C}{C}{C}.
  3. Activate Basalt Monolith's second ability by paying {1}, untapping it.
  4. Repeat.[END OF COMBO STEPS]

Result:
  - Infinite colorless mana[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Training Grounds must be on the battlefield
  - Basalt Monolith must be on the battlefield
  - Karn's Touch must be in your hand
  - Basalt Monolith does not have summoning sickness.
[END OF COMBO PREREQUISITES]
assistant