There are three permanents on the battlefield that can collectively tap to produce at least ({2} magic symbol) ({G} magic symbol) .
Mana Needed
({11} magic symbol) ({G} magic symbol) available.
Steps
Activate
Cormela by paying ({1} magic symbol) and tapping it, adding ({U} magic symbol) ({B} magic symbol) ({R} magic symbol) that can only be spent to cast instant or sorcery spells.
Cast
Doppelgang by paying ({12} magic symbol) ({G} magic symbol) ({U} magic symbol) , creating four token copies of
Cormela and of the three mana-producing permanents.
Put the tapped
Cormela and all but one
Cormela token into your graveyard due to the legend rule, triggering each of them once.
Resolve the first
Cormela trigger, returning
Doppelgang from your graveyard to your hand.
Resolve all remaining
Cormela triggers.
Activate twelve of the mana-producing permanent tokens by tapping them, adding at least ({11} magic symbol) ({G} magic symbol) .
Repeat.
Notes
This combo makes infinite mana if you add ({3} magic symbol) to casting
Doppelgang originally. Once you have infinite tokens and mana, you may instead target any other permanents using
Doppelgang.
Results
Infinite ETB.
Infinite storm count.
Infinite creature tokens.
Infinite magecraft triggers.
Infinite landfall triggers.
Infinite casts of instants and sorceries in your hand and graveyard.
Infinite copies of any permanent on the battlefield.