Elite Arcanist + Cabal Ritual + Chromatic Orrery + Freed from the Real

Elite Arcanist

Cabal Ritual

Chromatic Orrery

Freed from the Real

How it works

1. Activate Elite Arcanist's ability by paying 2 and tapping it, casting a copy of Cabal Ritual without paying its mana cost.
2. Resolve Cabal Ritual, adding at least 3.
3. Activate Freed from the Real's second ability by paying 1, untapping Elite Arcanist.
4. Repeat.
5. If you have seven or more cards in your graveyard, this combo nets infinite mana.