Seheg'Ryx, Keeper of Secrets

Indestructible, Deathtouch
Seheg'Ryx can't attack or block unless a library has thirty or fewer cards in it.
You may look at the hand of any opponent,
or top card of any opponent's library, or any face-down creature at any time.
{1}{u/b}{u/b}, {t}: Each opponent exiles the
top three cards of their library.