Confront the Past 
Sorcery — Lesson
Choose one — • Return target planeswalker card with mana value X or less from your graveyard to the battlefield. • Remove twice X loyalty counters from target planeswalker an opponent controls.
Legality
standardNOT LEGALpioneerLEGALmodernLEGALlegacyLEGALvintageLEGALcommanderLEGAL