The Ruler of Nightmares

Fear,Hexproof,Deathtouch,Firststrike
When The Ruler of Nightmares enters the battlefield, return all Eldritch nightmares
creatures from the graveyard to the battlefield.
When The Ruler of Nightmares Dies until the end
of this turn you may pay life instead of mana and
if The Ruler of Nightmares would enter the battlefield this way it would enter tapped.