Summoning spells?

[Dragon Mage]

Does a caster need to maintain a line of effect and remain within the range of his summoned creatures? Or can he summon them and leave, leaving his summoned creatures behind to carry out the last order given?

 

[James McMurray]

Line of effect (for all spells that don't state otherwise) is only necessary at the time of casting. You can summon something and then leave, or have it leave.