I found it. Dragon 288.
Its a LA +2 template, highly unimpressive. Theres a table of how many advantages along with disadvantages you get, you get 1 advantage with 1 disadvantage. The advantages are small stuff like fire resist 5, DR5/silver, can cast cure moderate wounds 3/day, or the slayer form which lets you do 1d10 damage with unarmed strikes, +6 nat armor with +8 enchantment bonus to strength, but you take 1 point of temp con damage each round......cmon 1d10 unarmed strike damage......thats just sad......and +8 enchantment is only 2 more than what a high level fighter should have with a +6 belt of strength.
Disadvantages are things like, if you go to 0 hp or below, you remain unconcious till your hp is more than half of your max hp(this is crazily bad.....basically if you get knocked to 0 you are out of a fight till it ends, period), you are treated as evil for all purposes of spells, effects, etc(even if you are good!), lose 2 points of wisdom, lose 2 points of cha.......
I cant possibly see how this is worth +2 LA. Bhaalspawn are supposed to be incredibly powerful, immortal........hell by the rules of divine rank 0, they ARE divine rank 0.