(I understand. Gotta take risk sometimes... As for the spell turning, he has to activate the ring. He can't in a surprise round. I figure that even if the spells dont succed, it will make the baddies paraniod.)
Zan scries on the dragon, with him and Dan switching spell casting untill one of them succeeds. (no more then 2 times each) If everything is like before, then they will each cast Greater Invisability, Fly, Stoneskin, and Repulsion(60 ft) on themselves. Then greater teleport inside the cave, at least 100 ft away from the dragon, but not more then 120 ft away. They will each cast an enlarged finger of death (120 ft range). Let me know what happens after that. If I see something else while scrying, let me know, and I will state different actions.
Zan scries on the dragon, with him and Dan switching spell casting untill one of them succeeds. (no more then 2 times each) If everything is like before, then they will each cast Greater Invisability, Fly, Stoneskin, and Repulsion(60 ft) on themselves. Then greater teleport inside the cave, at least 100 ft away from the dragon, but not more then 120 ft away. They will each cast an enlarged finger of death (120 ft range). Let me know what happens after that. If I see something else while scrying, let me know, and I will state different actions.