From LSWiki

Contents 1 Description Example 2 Bonding Requirements 2.1 Known Abilities 2.1.1 Statistic Bonuses 2.1.2 Specialization Access 2.1.3 Charms 2.1.4 Other Powers

Description Example

 This is a large feline creature with dark violet hide, blue eyes, and two
 evanumbra tentacles extending forward from her shoulders.  This is a
 felivanus, a feared predator of Zadnothruin.  Felivani are creatures of shadow
 and illusion, having the natural ability to make themselves appear a short
 distance from where they actually are.  Those who hunt felivani are known to
 train in techniques such as blindfighting, in order to maximize the
 information they can use from non-visual sense modalities.  Some even prefer
 to fight the felivanus with a blindfold, finding the inherent difficulties of
 blind combat easier to cope with than the deliberate deception of felivanus
 illusion.  Her seems to slide constantly from your visual focus. 

Ralnos exclaims: They come in dark violet, midnight blue and dark gray. Woo, variety!

Bonding Requirements

Hefty chunk of tactics, stealth, manipulation, and dirty fighting. One was bonded at dirty fighting 38, manipulation 38, tactics ~100, stealth ~200. Or you could get a glomschal, if I heard right. Stealth requirements are lower; one was bonded at same as above but stealth 61.

Known Abilities

Statistic Bonuses

Verynvelyrae who bond to a felivanus obtain Strength, Constitution, Dexterity and Perception boosts.

Specialization Access

Specialty bonuses are as follows are provided to...

 Dirty Fighting
 Tactics
 Illusion
 Killer Instinct
 Stealth

Extra specialty access is given to:

 Entropic Affinity
 Illusion

Ralnos remarks: This will be updated when I get more time to look over things.

Charms

   First, the ability to urge your familiar to specific action.  This ability
   can be used even if you do not know where your familiar is.  To do this,
   concentrate on urging your familiar to undertake the desired action.

   Second, the ability to call your familiar to your side.  To do this,
   concentrate on calling your familiar.

   Third, the ability to send your familiar to safety.  This ability can be
   used even if you do not know where your familiar is.  To do this, concentrate
   on sending your familiar to safety.

   Fourth, the ability to perceive subtle energy flows.  To do this,
   concentrate on perceiving subtle energy flows.

   Fifth, the ability to see through your familiar's eyes.  This ability can
   be used even if you do not know where your familiar is.  To do this,
   concentrate on seeing what your familiar sees.

   Sixth, the ability to make it appear as though one is standing several
   dimins from one's actual location.  To do this, concentrate on visually
   displacing myself.  To end the effects of this charm, concentrate on visually
   replacing myself.

Other Powers

   You pet Alytana with your right claw.

   You sense an array of dark energies flowing from Alytana's body into your spirit.

Ralnos intones: Supposedly trains your entropic affinity. It's also a highly temporary magick resistance and entropic affinity buff.

   You also gain heliocausticity and a evanumbra consistancy that bars you from vivisection.
   The tentacles of evanumbra grow at bond strength resilent.