I may have to kill them all (My players out!)

[shilsen]

I'm with Wulf. Unless your players are really bad at thinking tactically, this can go much better for them than you think.

Anything a 6th lvl wizard summoner can come up with will be taken apart instantly by a 6th lvl fighter and barbarian. Considering how close he'd have to be to summon creatures near them (range = 40 ft for a Wiz6), there's also a fair chance they'll get lucky and pinpoint his location (listen check DC 24 to pinpoint someone casting at 40 ft distance).

The 7th lvl druid can summon a juvenile arrowhawk, 1d3 giant owls/eagles or 1d4+1 dire bats to keep them busy with one Summon Nature's Ally 4. Not to mention a nice Flame Strike or Ice Storm when they're visible, which will probably take a chunk out of a 6th lvl character.

Also, how are they flying? If it's through a spell then a well-timed dispel magic can end the fight right there.

And flying in there for a greatsword attack is an incredibly bad tactic.

In short, it's tough, but it's not that bad.

 

[tarchon]

What is the level of agreement on this?

EL 8 or 9 - if the druid stays in it long enough, I don't think anyone will bite it. I assume all of the fighter types have some kind of semi-decent missile weapons, and certainly the ranger would. You can pretty easily ready an attack to disrupt a flying spellcaster, and the PCs will be able to take advantage of cover a lot more effectively than a flying target can.