Creature — Shapeshifter 3/4, 3UU (5)
Rare
As long as an opponent controls a creature with flying not named Escaped Shapeshifter, Escaped Shapeshifter has flying. The same is true for first strike, trample, and protection from any color.
Illus. Douglas Shuler

10/4/2004: In a multiplayer game, it works if any opponent controls creatures with the appropriate abilities.
Official Reprint Policy (This card is on the reserved list)
Legal in Vintage (Type 1)
Legal in Legacy (Type 1.5)
Legal in Classic (MTGO)
Legal in Commander