im actually planning on running calystryx since i was using hammerfast as a skeleton for my current campaign, and while the party knows little of the dragon, im def going to use the updated version for the campaign now (prob scaled down) although i was planning on the party getting help from some NPC groups depending on how they treated them, also, having them fight her in Hammerfast next to some of the guard towers will allow the PCs to use the ballistae mounter there to attack her. Right now the party is carrying a Mcguffin to be destroyed in the Iron Tomb of Hammerfast, and naturally they need to get permission to enter before they engage its horrors. They havent arrived yet, but i was thinking that they should come during the summer dragon festival as a source of foreshadowing about Calystryx. Im still going to have Thar trying to resurrect her, but im thinking of combining his story theme with the main baddie from Runecutters ruin (irresponsible use of divine runes, plus a few nifty battles) and to top it off ill make Thars lair similar to the tomb in Sleeper in the Tomb of Dreams, but make all the carvings on the wall be about the Dragon being a Far Realm monstrosity. This could open the door to a more Far Realm themed Paragon tier, since my Heroic tier has been mostly undead.