Seer of the Blind Eternities

When Seer of the Blind Eternities enters the battlefield, you may pay X life. If you do, search your library for a colorless card with converted mana cost X, reveal it, and put it into your hand, then shuffle your library.
Whenever you cast a colorless spell, reveal the
top card of target player's library. You may exile it.
"They will rise again."