Turnabout + Ghostly Flicker + Mnemonic Wall + Donnie & April, Adorkable Duo

Turnabout

Ghostly Flicker

Mnemonic Wall

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 Donnie & April and Mnemonic Wall.
4. When Donnie & April and Mnemonic Wall enter the battlefield, they trigger, returning Turnabout and Ghostly Flicker from your graveyard to your hand.
5. Repeat.

This clever loop begins with Donnie & April, Adorkable Duo and Mnemonic Wall standing ready on the battlefield alongside enough lands to generate the required mana. You cast Turnabout to untap your lands and fuel your spells, then follow up with Ghostly Flicker to temporarily exile both Mnemonic Wall and Donnie & April, Adorkable Duo. As these two return to the battlefield, Mnemonic Wall's entry trigger brings back Turnabout while Donnie & April, Adorkable Duo's ability retrieves Ghostly Flicker, setting you up to repeat the entire process indefinitely.