Creature - Shapeshifter 1/1, 2W (3) Changeling (This card is every creature type at all times.) {X}: Creatures you control become X/X and gain all creature types until end of turn.1 Unaware of Lorwyn's diversity, it sees only itself, reflected a thousand times over.
Illus. Zoltan Boros & Gabor Szikszai
10/1/2007: Playing the ability with X = 0 will cause all creatures you control to become 0/0 and be put into the graveyard.
10/1/2007: Activating the ability for a second time in the same turn will overwrite the first activation. For example, if you play the ability with X = 4, then play it with X = 1, each of your creatures will be 1/1.
10/1/2007: Mirror Entity's ability overwrites any previous effects that set the power or toughness of any of your creatures to specific numbers. Examples of this include Lignify's ability, Maro's ability, and an earlier activation of Mirror Entity's ability. It will also overwrite any previous effects from resolved spells and abilities that changed the power or toughness of any of your creatures. An example of this is Giant Growth. Any such effects that apply after Mirror Entity's ability resolves will work normally.
10/1/2007: Mirror Entity's ability doesn't overwrite changes to the power or toughness of any of your creatures that come from counters. It also doesn't overwrite static abilities that change the power or toughness of any of your creatures. Examples of this include Glorious Anthem and Yavimaya Enchantress.
Lorwyn
(Rare)