Shift, Reality Warper

+2: Shift becomes a 7/4 creature with haste, vigilance, indestructible, and hexproof until end of turn.
-X: Target player has to sacrifice X permanents. When these permanents enter the graveyard, exile them instead.
-20: Exile all of target player's permanents. That player's starting health becomes 5. That player goes to their starting health.