Priest of Titania + Rings of Brighthearth + Tidewater Minion

Priest of Titania

Rings of Brighthearth

Tidewater Minion

How it works

1. Activate Priest of Titania by tapping it, adding at least .
2. Activate Tidewater Minion's second ability by tapping it, targeting itself.
3. Rings of Brighthearth triggers, causing you to pay 2 to copy Tidewater Minion's ability, targeting Priest of Titania.
4. Resolve both Tidewater Minion abilities, untapping it and Priest of Titania.
5. Repeat.

This clever loop lets you turn a humble Elf into an infinite mana fountain by weaving active untapping with copied triggers. With enough Elves on the board, tapping Priest of Titania yields more than enough green mana to pay for the copying process. Meanwhile, Tidewater Minion serves as the engine's primary untapper, and Rings of Brighthearth acts as the critical amplifier that doubles the minion's untap ability so both the minion and the priest can ready themselves for the next iteration.