Metal Mirror

+2: Deal 5 damage to any target or prevent next 5 damage to any target this turn. Gain 3 life. Draw a card.
-4: Exile a permanent or counter a target spell. (this ability can be used on any player's turn and at any time as if it was an instant)
-10: Scry 5. Deal 15 damage to any number of targets and exile any 3 nonland permanents or gain 15 life and draw any number of cards.