Fëanor, Smith of Silmarils

When Fëanor enters the battlefield create 3
Silmaril tokens that have,
"{w}{w}{w}{t}: Target permanent losses all abilities
until its controllers next turn."
Vigilance, Shroud
"For so sworn good or evil an oath may not be broken
and it shall pursue oathkeeper and oathbreaker to the
world's end." — The Silmarillion