Professor Müne Etel

Whenever you cast an instant or sorcery spell, choose one that hasn't been chosen —
• You may tap or untap target permanent.
• Prof. Müne Etel deals 3 damage to each opponent.
• Copy target instant or sorcery spell you control.
-You may choose new targets for the copy.
• Put Müne Etel on top of its owner's library.