I love the idea of the horned one, +1 move and no stupidity for 15 pts more than a cold one is great and its the fastest moving thing in the LM army. The problem is that there arent really any decent magic items for him. If you give him a halberd you sacrifice your save, if you take a spear you need to get the charge which should only happend consistenly in a CoC unit, which are stupid anyway.
Scar-Vet, Horned One, LA, Shield, Biting Blade is the only set up that works if you want magical attacks and good save, and he modifies armor by -3 which is pretty decent. I wouldn't normally field this guy, but if you field 3 scar vets (3 scar vets + lone slann can perform very well) then this becomes a good option as the other great set ups are already gonna be taken. Good way to add fear protection to a saurus unit without giving them stupidity as well, but with coldblood stupidity is pretty manageable imo.