Unstable Amulet (Ripple Foil) [Modern Horizons 3]

Cost: 1 R When Unstable Amulet enters the battlefield, you get E E (two energy counters).
Whenever you cast a spell from anywhere other than your hand, Unstable Amulet deals 1 damage to each opponent.
T , Pay E E : Exile the top card of your library. You may play it until you exile another card with Unstable Amulet.