How can you create a combo with Ertha Jo, Frontier Mentor, Tidewater Minion?
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[START OF COMBO]This combo can be formed with Ertha Jo, Frontier Mentor, Tidewater Minion

Color identity: URW
Mana cost: 
Steps:
  1. Activate Tidewater Minion's second ability by tapping it, targeting itself.
  2. Ertha Jo's second ability triggers, copying Tidewater Minion's ability, targeting any other permanent.
  3. Resolve both Tidewater Minion abilities, untapping it and the other targeted permanent
  4. Repeat.[END OF COMBO STEPS]

Result:
  - Infinite mana permanents you control can produce
  - Infinite untap of permanents you control[END OF COMBO RESULT][END OF COMBO]

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