How can you create a combo with Aggravated Assault, Bear Umbra?
user
[START OF COMBO]This combo can be formed with Aggravated Assault, Bear Umbra

Color identity: RG
Mana cost: 
Steps:
  1. Declare enchanted creature as attacker.
  2. Bear Umbra triggers, untapping all lands you control.
  3. Proceed to your next main phase.
  4. Activate Aggravated Assault by paying {3}{R}{R}, untapping all creatures you control and getting an additional combat and main phase after this one.
  5. Repeat.[END OF COMBO STEPS]

Result:
  - Infinite combat phases[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - All permanants must be on the battlefield
  - You control an additional creature.
  - An additional creature does not have summoning sickness.
  - Bear Umbra attached to that additional creature you control.
  - You control lands that can tap to produce at least {3}{R}{R}.
  - An opponent is unable to block and kill creatures you control.
[END OF COMBO PREREQUISITES]
assistant