Nail said:
First of all: You're in trouble if you attack a dragon when he's prepared. Why is it you assume the dragon is prepared? (I'm guessing it's because your DM has your enemies prepared at all times, regardless of PC tactics....but I could be wrong. Either way, we're no longer talking about how wimpy Rogues now, are we?)
Anyone's in trouble when they get jumped by something. Old dragons are smart, know this, and they can cast. A smart dragon would scram (Dim Door, Teleport, Invis, whatever) for a round or two then retake the initiative, not just start trying to chew on people who are obviously prepared for it. If your DM played it like a wounded grizzly, bully for you, but that sounds like a sad way for a majestic beast to go. For us, we've been jumped by things (dragons being among the most memorable) far more than we've jumped things because we have a lot more enemies than our enemies have us.
Nail said:
Second: Greater Dispel Magic. At caster level 13, up against casters of 16th to 20th level, those spells stand little chance.
True, but for a prepped dragon, it buys him a round of melee immunity and the caster's first action. That should be enough to flyby and grab someone tasty, at which point the party is pretty boned. (My current party is notoriously bad at dealing with flying enemies.)
Nail said:
Third: In our case, the dragon wasn’t prepared. I located him with
Discern Location, we buffed, then we Greater Teleported to right beside him. We had the surprise round....and it went downhill for the dragon from there.
Can you normally Greater Teleport to a place you just have the name of like that? I thought Greater Teleport required a good description. If so, that's useful, my current character has Greater Teleport and we have several places we have names for but nothing else.
Nail said:
Unless the PCs are
all immune to fear. Check out the description of the spell
Heroes' Feast.

Did I mention we were immune to acid? Guess what the dragon tried round 1?
Yeah, totally missed that in Heros' Feast. For some reason I thought I had thought the immunity was just to poison, and it was a +1 to fear saves like bless. I even usually cast that every day. ;-)
Nail said:
The Rog 16/Ftr2 attack bonus was (I think....remember, I'm not the player...he might be using Weapon Finesse, or have some other feats/equipment of which I’m not aware....): +2(Ftr) +12(Rog) +1 (weapon focus) +7(Str) +5(Magic) +1(Haste) +3(Recitation) +2(Righteous Wrath) +2(flank)
Total: +35
That's a tad over the +23 you estimated.
My math is better than my typing. ;-) I had thought +33 (14 BAB, 5 magic, 7 str, 1 haste, 2 flank, 3 spell, 1 focus) What's Righteous Wrath? I had thought you meant Righteous Might and kinda glazed over it.
NAIL said:
He was using two weapons, with 2 extra attacks at full attack bonus from the boots of speed and Righteous Wrath. If I've got the AB right, then that is an attack routine that looks like this:
+33/+33/+33/+33/+28/+28/+23
Since he's flanking, he gets the sneak attack on each hit. Given a target AC of 39, the average damage per round would be 249 hp. (Remember: that’s average....and it looks like one round our Rogue was a little lucky.) I can show you the calculations if you’d like.
AC 39...
Sorry, still a little stunned that a black Wyrm wouldn't have mage armor, any protective items, Contingency Teleport ... was he just sitting on 240,000 gp of random loot not using it for anything? Not even underwater? Wow, we have different DMs ;-) Mine would probably have had him wearing bracers of armor, a ring of protection, +con & dex items, and if we were really asking for it, a scroll of something awful like Timestop (dragons have in class UMD) as part of his treasure.
Didn't he even try to move away to position the breath better and make people move up to him?
Worst of all, the dragon didn't hover? Hover makes sneak attack impossible, and it's a move action for the dragon. If the dragon had just flown up 20' and hovered the first round, you would have been toast.
It sounds like your DM's way behind the curve in your group's min/max arms race, compared to your characters. My DM's alwaysa a step ahead. Jerk. ;-)