How can you create a combo with Cowardice, Mirage Mirror, Myr Battlesphere, Krark-Clan Ironworks, Tezzeret, Master of the Bridge?
user
[START OF COMBO]This combo can be formed with Cowardice, Mirage Mirror, Myr Battlesphere, Krark-Clan Ironworks, Tezzeret, Master of the Bridge

Color identity: UB
Mana cost: {4} (at most)
Steps:
  1. Cast Myr Battlesphere by paying at most {4}.
  2. Myr Battlesphere enters the battlefield, creating four 1/1 Myr artifact creature tokens.
  3. Activate Krark-Clan Ironworks three times by sacrificing the Myr tokens, adding six {C}.
  4. Activate Mirage Mirror by paying {2}, targeting Myr Battlesphere.
  5. Cowardice triggers, returning Myr Battlepshere from the battlefield to your hand.
  6. Mirage Mirror's ability fails to resolve  due to no longer having a legal target.
  7. Repeat.[END OF COMBO STEPS]

Result:
  - Infinite colorless mana
  - Infinite creature tokens
  - Infinite death triggers
  - Infinite enters the battlefield
  - Infinite leaves the battlefield
  - Infinite sacrifice triggers
  - Infinite storm count[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Cowardice must be on the battlefield
  - Mirage Mirror must be on the battlefield
  - Myr Battlesphere must be in your hand
  - Krark-Clan Ironworks must be on the battlefield
  - Tezzeret, Master of the Bridge must be on the battlefield
[END OF COMBO PREREQUISITES]
assistant