Turnabout + Ghostly Flicker + Archaeomancer + Donnie & April, Adorkable Duo

Turnabout

Ghostly Flicker

Archaeomancer

Donnie & April, Adorkable Duo

How it works

1. Activate any number of lands you control by tapping them, adding at least 4.
2. Cast Turnabout by paying 2, untapping all lands you control.
3. Cast Ghostly Flicker by paying 2, blinking Archaeomancer and Donnie & April.
4. When Archaeomancer and Donnie & April enter the battlefield, they trigger, returning Turnabout and Ghostly Flicker from your graveyard to your hand.
5. Repeat.

This loop achieves an infinite engine by leveraging a classic recursive blinking core: Ghostly Flicker targets both Archaeomancer and Donnie & April, Adorkable Duo, exiling them and returning them to the battlefield fresh. When Archaeomancer enters, its trigger returns Ghostly Flicker to your hand, while Donnie & April, Adorkable Duo's entry trigger conveniently returns Turnabout to hand. Once your lands generate enough mana to fuel the loop, casting Turnabout lets you completely untap your lands to reset your resources, leaving you free to repeat the process indefinitely for infinite mana and cast triggers.