Astrea's Armor of Nesskard

Flying, Lifelink
{1}{b}{b} 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
lifelink.
If Astrea's Armor of Nesskard isn't a creature
creatures you control have deathtouch