Question in the title. If it does this is uber powerful

They stack in the meaning of you have +15% damage and your companion has +30% damage to target qualified for sneak attack.

On 7/14/2023 at 12:54 AM, vinicius._.17 said:

Question in the title. If it does this is uber powerful

Merciless Companion gives your animal companion +30% additive weapon damage, Apprentice's Sneak Attack gives your character +15% additive weapon damage. There is no stacking (on one character). You will not profit from Merciless Companion and your animal companion will not profit from Apprentice's Sneak Attack.  

Edited July 16, 20232 yr by Boeroer

gotcha. thanks this is still powerful. keeping the same topic about companions. does companions benefit from special equipment enchantments you have? like can you stack boars low endurance bonus with equipments low endurance or even godlikes endurance bonus?

I don't know what you mean with low endurance or godlikes' endurance bonus. Do you mean healing? Like the racial ability "Silver Tide" of Moon Godlikes?

Animal companions do not benefit from any equipment enchantment that only applies to your ranger (like Might +1 or something). But if you are a Moon Godlike and trigger a Silver Tide because you drop below 50% endurance for example, then your boar companion would get healed by Silver Tide like any other party member in range would get healed, too. 
Equipment like "Shod in Faith" boots also work well for a ranger: if the healing (Consecrated Grounds) of the boots gets triggered it will heal the animal companion and other party members.

But in general: Animal Comanion and Ranger are two totally seperate characters. No individual stat buff the Ranger gets will be transferred to the Animal Companion or vice versa - unless explicitly stated otherwise like with the abilities "Marked Prey", "Defensive Bond" and "Vengeful Grief" (and those are the only abilities I recall that apply to the ranger AND the animal companion).

amazing. thanks for the indepth explanation