Aether Storm + Mindslaver + Alchemist's Refuge

Aether Storm

Mindslaver

Alchemist's Refuge

How it works

1. Activate Mindslaver by paying 4 and tapping it, causing you to gain control of target opponent during their next turn.
2. During the opponent's turn, activate Alchemist's Refuge by paying and tapping it, allowing you to cast spells this turn as though they have flash.
3. Cast Aether Storm by paying 3.
4. As the opponent, activate Aether Storm by paying 4 life.
5. Repeat step 4 until the opponent has 3 or less life remaining.