Divewing Rig

You may exert equipped creature as it attacks.
When you do, it gets +2/+0 and gains flying and
first strike until end of turn. Unattach Divewing
Rig. (An exerted permanent won't untap during your
next untap step.)
Tap an untapped creature you control with
flying: Attach Divewing Rig to target creature
you control. Activate this ability only any time
you could cast a sorcery.