I'm fairly new DM'ing and can't seem to find anything to solve this for me in print, so I beg a little assistance...
If an arcane caster casts a spell such as Chill Touch at CL4, according to the way I read the spell description he casts and the effect lasts until he touches 4 individuals or creatures. It's a duration instantaneous, meaning he or she does not need to continue to concentrate. Therefore in the next round, he or she could cast Corrosive Grasp for example, and then be hitting with BOTH effects.....
Is this a correct interpretation or have I missed something? It seems a bit unbalanced, but as I said, I can't find anything to contradict.
Any and all input is appreciated!