Saeviomagy
Adventurer
I'd have just let him dispel it with no check.
I mean c'mon - it's pretty friggin obvious that if your buddy is totally immobile, some magic is at work. It'd be like saying
DM: "the monster throws a blue bolt at you that crackles and sparks"
Player: "I cast protection from electricity"
DM: "make a spellcraft check"
Player: "4"
DM: "Not knowing that the blue, crackling, sparking bolt was electricity, you cast protection from acid instead"
I mean c'mon - it's pretty friggin obvious that if your buddy is totally immobile, some magic is at work. It'd be like saying
DM: "the monster throws a blue bolt at you that crackles and sparks"
Player: "I cast protection from electricity"
DM: "make a spellcraft check"
Player: "4"
DM: "Not knowing that the blue, crackling, sparking bolt was electricity, you cast protection from acid instead"