Slepgoyf, Urborg's Enigma

At the beginning of each player's upkeep, Slepgoyf
gets +X/+X until end of turn where X the number
of card types among cards in exile.

When Slepgoyf attacks, choose one where X is
Slepgoyf's power —
• Scry X.
• Exile up to X cards from the top of your library.
• Exile up to X target cards from a graveyard.
• Each opponent loses X life.