The Demon's Concerto

{t}, Exile this artifact: Roll a six-sided die.
You gain or lose life based on the result.
- 1: You lose 1 life.
- 2: You gain 1 life.
- 3: You gain 2 life.
- 4: You gain 3 life, and all opponents gain 1 life.
- 5: You gain 4 life.
- 6: You gain 5 life, and all opponents gain 1 life.
This card may not be in your library.