Dike, Fathom Plummeter

{u}{b}: Exile the bottom card of each opponent's library face-down and group them into one pile.
{t}: Look at one pile of cards exiled with Dike, Fathom Plummeter. Until end of turn, you may cast up to one of those cards without paying its mana cost. If you do, its owner draws a card,
then put each other card exiled with Dike into
its owner's graveyard. Activate this ability only
if there are three or more of the piles.
"Atlazan always surprises those who seek one. Shall we look over here to