Mindwarper Mage

Flash
When Mindwarper Mage enters the battlefield, return target instant or sorcery card from your graveyard to your hand. It gains flash. When you cast it, choose one, where X is the card's converted mana cost -
- Target player discards X cards.
- Target player puts the top X cards of their library into their graveyard.
- Gain control of target creature with converted mana cost X or less.