1) It does not have an icon in-game, just a blank slate under Special Abilities.
2) The Beast Claw ability does add +1 APR, but actually raises THACO by two, and does not add exceptional strength (18/72) as the spell description says. Perhaps there is an unintended interaction with the Lupinist's bonus (Infection) ability that is supposed to further enhance the Beast Claw?
Example: In a game unmodded except for Faiths&Powers, my level 19, 18-strength Lupinist (created from scratch in Throne of Bhaal as a sandbox experiment) goes from BASE THAC0 7/main hand THAC0 1 to BASE THAC0 7/main hand THAC0 3 when he activates the Beast Claw, and his Strength remains 18, no exceptional strength. In fact, activating the Beast Claw while wearing a strength-boosting item (in this case the Girdle of Hill Giant Strength) cancels the Belt and just sets strength to the original 18.
3) Activating the Beast Claw while in Werewolf shape deprecates the enormous Constitution bonus! My Lupinist goes from Con 24 (Werewolf Lord) to his original Con 16! In addition, Beast Claw while shapechanged raises THAC0 by three points and the werewolf lord's damage goes from 2d6 +5 for proficiencies, +9 for Strength to 2d3+1, +9 for Strength IF HE DID NOT REMOVE HIS EQUIPPED WEAPON PRIOR TO CASTING BEAST CLAW WHILE SHAPECHANGED. Perhaps this is to do with lack of proficiency in unarmed combat?
The innate Beast Claw ability from the lupinist's behaviour seems not right, when compared to the Beast Claw spell:
It gives 18 STR instead of 18/72
It disables spellcasting
Oh yeah, and a bug report:
The Lupinist's Beast Claw feature seems bugged.
1) It does not have an icon in-game, just a blank slate under Special Abilities.
2) The Beast Claw ability does add +1 APR, but actually raises THACO by two, and does not add exceptional strength (18/72) as the spell description says. Perhaps there is an unintended interaction with the Lupinist's bonus (Infection) ability that is supposed to further enhance the Beast Claw?
Example: In a game unmodded except for Faiths&Powers, my level 19, 18-strength Lupinist (created from scratch in Throne of Bhaal as a sandbox experiment) goes from BASE THAC0 7/main hand THAC0 1 to BASE THAC0 7/main hand THAC0 3 when he activates the Beast Claw, and his Strength remains 18, no exceptional strength. In fact, activating the Beast Claw while wearing a strength-boosting item (in this case the Girdle of Hill Giant Strength) cancels the Belt and just sets strength to the original 18.
3) Activating the Beast Claw while in Werewolf shape deprecates the enormous Constitution bonus! My Lupinist goes from Con 24 (Werewolf Lord) to his original Con 16! In addition, Beast Claw while shapechanged raises THAC0 by three points and the werewolf lord's damage goes from 2d6 +5 for proficiencies, +9 for Strength to 2d3+1, +9 for Strength IF HE DID NOT REMOVE HIS EQUIPPED WEAPON PRIOR TO CASTING BEAST CLAW WHILE SHAPECHANGED. Perhaps this is to do with lack of proficiency in unarmed combat?
EDITED for clarity.