Astrea's, Armor of Glith

Flying, Firststike
{1}{w}{w} Engrave- Attach this creature to a
creature. As long as this is Engraved on a creature
it's not a creature, it's an equipment.
Engraved creature gets +6/+6 and has Flying and Firststrike.
If Astea's Armor of Glith isn't a creature
creatures you control have vigilance