Tasty grants a Lifesteal of 10% for 10 seconds seconds when you attack a bleeding target.
This cannot trigger more than once every 15 seconds.
Blood is life force, a fact which makes any creature that consumes it especially horrific. The Blood Feeder goes directly against the cultural mores of most societies, eliciting such a reaction from good citizens that Blood Feeders are often driven to hide their existence.
Ghosts aren't the only things that go bump in the night.