The Sticker | Pegasus is a High Grade sticker. It comes from the Bestiary Capsule.
Sticker
Basilisk (Foil)
Dragon (Foil)
Phoenix Reborn (Foil)
Hippocamp (Holo)
Manticore (Holo)
Pegasus (Holo)
Sphinx (Holo)
Basilisk
Dragon
Hippocamp
Manticore
Phoenix Reborn
Sphinx