Vraleos, Dream Tyrant

Haste, Flying, Vigilance
Whenever Vraleos, Dream Tyrant attacks, target opponent looks at the top 5 cards of your library
and separates them into a face-down pile and a
face-up pile. Put one pile into into exile and
the other into your graveyard. As long as the pile remains exiled, you may look at the cards and play
them without paying their mana cost.