Nameless Inversion

Oracle Text

Changeling (This card is every creature type.)

Target creature gets +3/-3 and loses all creature types until end of turn.

Card Rulings

10/1/2007 If a creature loses all creature types but then gains a new creature type later in the turn, it will be that new creature type.
7/1/2013 Examples of creature types include Sliver, Goblin, and Soldier. Creature types appear after the dash on the type line of creatures.