Captain Sisay + Mindslaver + Mistveil Plains

Captain Sisay

Mindslaver

Mistveil Plains

How it works

1. Activate Mindslaver by paying 4, tapping and sacrificing it, causing you to gain control of target opponent during their next turn.
2. Activate Mistveil Plains by paying and tapping it, putting Mindslaver on the bottom of your library from your graveyard.
3. During your next turn, activate Captain Sisay by tapping it, searching your library for Mindslaver and putting it into your hand.
4. Cast Mindslaver by paying 6.
5. Repeat.