wlmartin
Explorer
This seems pretty basic to me.
If one of your attacks said "Int+2 vs AC" what would it mean?
It means exactly the same here (this is what the "you attack through the thrall" means).
So it is Your Int Mod + Half Your Level + 2 + proficiency bonus (as the Thrall does Weapon keyworded attacks) + enhancement bonus (+feat/item/etc bonuses).
The attacks the Thrall has use a weapon it is weilding or its natural weapons, which are assumed to be +3prof/1d10dam (like a bastard sword) or +2prof/1d12dam (like a greataxe).
So basically if you don't give it a specific weapon, assume it wields its natural weapons (and you choose whether you want your thrall to be accurate or damaging by picking the natural weapon that reflects what you want).
If you do give the Thrall a cool weapon it can use the properties and enhancement bonus on that weapon for the attack, or the propties and enhancement on your implement for the attack, but not both - you get to decide which you would prefer each attack.
Ah so i think I get it
If your attack bonus to hit was as follows :
Psion 11th Level with Orb of Mental Domination +3
+5 int mod
+5 half level
+3 enhancement bonus
+1 feat bonus - Orb Expertise
+2 (Stated in the attack)
+2/+3 Weapon Proficency
That is 18-19 + d20 vs AC?
This just seems seriously broken...