Gravitationspren

Flying, defender

The Fourth Ideal: If you control a Skybreaker, Gravitationspren becomes an Equipment and is no longer
a creature. Equipped creature gets +4/+4 and gains "{t}: Copy the next instant or sorcery spell you play this turn.
You may choose new targets for the copy. Activate only as
a sorcery."

Equip {4}

Gravitationspren is possibly another name for groundspren, luckspren, or gravityspren.