Nyarlathotep

+1: Until end of turn, Nyarlathotep becomes a copy of target creature, except it has shroud and indestructible that ceases to be a planeswalker.
-1: The next creature card you discard has madness, where its madness cost is equal to half its converted mana cost, rounded up.
-X: Target player draws X cards, discards X cards and puts the top X cards of their library into their graveyard.