Khamul, Easterling Wraith

Flash, Deathtouch

When Khamul enters the battlefield, counter target
spell, and The Ring Tempts you.

Whenever the Ring Tempts you, exile target
instant or sorcery card from a graveyard. For as long
as it remains exiled, you may cast that spell. You
may spend mana as though it was mana of any color to cast it.