The Usurper's Ring

{t}: Untap target creature an opponent controls,
until the end of the turn it loses Indestructible
and First strike.
When ever a creature dies, target opponent loses
2 life and you gain 2 life. If the creature was
legendary, target opponent loses 5 life and you
gain 5 life instead.
"It is believed that the gem is stained red by the blood
of Edger Markov.... the father of The Usurper"