Greenwood Bladebill

As long as Greenwood Bladebill is enchanted, it
gets +1/+1 and has flying.
The Bladebill is a curious creature. Though it is drawn
to magical energies, it shies away from most humans,
especially mages. The pirates of Greenwood decided
that it was more useful than a parrot so most of their
ships have one on board. They serve as both magic
detectors and, occasionally, as sidearms.