Your Power is Mine

At the beginning of your first Main Phase, pay {x}, then choose one that hasn't been chosen.
-Target Opponent Loses X life and you gain X life.
- Move X minus 1 Loyalty counters from a Planeswalker you don't control to a planeswalker you control.
- Destroy target creature with power X or less.
- Take control of target creature with power X or less.