Roy Fleming, Fourth of Five

While this creature is on the board or in your graveyard, all escape costs for Nightmare creatures cost 2 less mana.
{t}: Sacrifice this creature. Search your deck for the Fifth of Five, reveal it, and place that planeswalker in your hand.
{t}{x}{x}: Mill {x} cards into your own graveyard. All of them which are Nightmares gain the following: "Escape: {2}, exile 2 cards from your graveyard."
Escape: {4}, exile 4 cards from your graveyard.