Like all other Beast weapons in Heroes; Nailah's weapon has multiple facets to it. The first part is cooldown reduction equal to the Killer/Slaying family of weapons. On top of that, the Wolf Queen Fang provides Nailah a boost to her Atk and Spd by 2 for every ally within 2 spaces, up to a maximum of +6. Finally, as with all infantry beast units, Nailah gains Atk +2 and the Wo Dao-style effect of +10 damage when she triggers her special.
Wolf Queen Fang
Accelerates Special trigger (cooldown count-1). During combat, boosts unit's Atk/Spd by number of allies within 2 spaces × 2. (Maximum bonus of +6 to each stat.) At start of turn, if unit is adjacent to only beast or dragon allies or if unit is not adjacent to any ally, unit transforms (otherwise, unit reverts). If unit transforms, grants Atk+2 and deals +10 damage when Special triggers.