Reyel, Seer of the Abyss

Reyel, Seer of the Abyss enters the battlefield with X Sight counters on it. At
the beginning of your upkeep, Epiphany X, where X is a number less than of equal to the number of Sight counters on Reyel. (To Epiphany X, Reveal cards from the top of your library until you reveal a non-land card with converted mana cost X. You may cast it. Shuffle your library.)