Vaxalon said:Okay, I just thought of a nasty trick, tell me if you think it'll work.
Sorceror starts to cast Fireball.
Enemy readies an action to cast a wall spell 10' in front of the fireball caster just before he releases it.
Fireball impacts wall, roasts caster.
Strictly by the rules, I don't believe so. The wall does appear in front of the sorceror...but he then chooses another target, unless the wall is invisible, and he is completely unaware of you casting the wall in front of him. You can't 'interrupt' his spell, except by damaging him, dsipelling or counterspelling. He isn't obligated to keep the same target once the wall is cast, any more than an archer or melee character is forced to target someone who's been killed before they use all of their attacks.Vaxalon said:Okay, I just thought of a nasty trick, tell me if you think it'll work.
Sorceror starts to cast Fireball.
Enemy readies an action to cast a wall spell 10' in front of the fireball caster just before he releases it.
Fireball impacts wall, roasts caster.
To elaborate on this, read the final paragraph under Casting Time on page 174 of the PHB (3.5). All pertinent decisions are made when the spell comes into effect.WizarDru said:Strictly by the rules, I don't believe so. The wall does appear in front of the sorceror...but he then chooses another target, unless the wall is invisible, and he is completely unaware of you casting the wall in front of him.