How can you create a combo with Viridian Joiner, Umbral Mantle?
user
[START OF COMBO]This combo can be formed with Viridian Joiner, Umbral Mantle

Color identity: G
Mana cost: {2}
Steps:
  1. Activate Viridian Joiner by tapping it, adding an amount of {G} equal to its power.
  2. Activate Viridian Joiner by paying {3} and untapping it, giving it +2/+2 until end of turn.
  3. Repeat.[END OF COMBO STEPS]

Result:
  - Infinitely large Viridian Joiner until end of turn
  - Infinite green mana[END OF COMBO RESULT][END OF COMBO]

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