Astrea's Armor of Wra-Te

Flying, Hexproof
{1}{u}{u} 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 Hexproof
If Astrea's Armor of Wra-Te isn't a creature,
creatures you own have flash