Ghostly Flicker + Palinchron + Archaeomancer

Ghostly Flicker

Palinchron

Archaeomancer

How it works

1. Activate up to seven lands by tapping them, adding at least 2.
2. Cast Ghostly Flicker by paying 2, blinking Archaeomancer and Palinchron.
3. When Archaeomancer and Palinchron enter the battlefield, their abilities trigger.
4. Resolve the Archaeomancer trigger, returning Ghostly Flicker to your hand from your graveyard.
5. Resolve the Palinchron trigger, untapping up to seven lands.
6. Repeat.
7. If you control seven lands that can tap to produce at least 3, this combo nets infinite mana, and you may blink any other permanent besides Palinchron.

This classic loop relies on Palinchron not only providing the initial fuel with its lands-untapping enters-the-battlefield ability, but also conveniently packing a self-bounce safety valve if needed, though here it stays on the board to be endlessly recycled. You use Ghostly Flicker to exile both Palinchron and Archaeomancer at once, resetting their enter-the-battlefield triggers so that Archaeomancer can immediately fish Ghostly Flicker right back out of your graveyard. As long as your lands can produce enough mana to recast the spell every iteration, the savings compound into infinite mana, infinite magecraft triggers, and an endlessly churning engine.