Dream of the Endless Mirrors

Enchant player
At the beginning of enchanted player's upkeep, put a depth counter on Dream of the Endless Mirrors. Then that player may scry X, where X
is the number of depth counters on it. If X is
five or greater, that player exiles the top five cards of his or her library instead.
First it shows you good. But be careful if you go deeper. The god of deception awaits to take your mind.