After you dimension door onto the dragon, you still make a check to remain on there. This check requires an action, which raises the problem of the action being consumed in order to cast dimension door, leaving no action to cling onto the creature. There are a ...
(spells)48basalt(charmclass)49greendragon(charm)4Afinches(charms)4Bhaotiansymbol(charmclass)4Cwuyue(charmclass)4Dsummonstheheavenlysoldier(bow)(charmclass)4Ebloodstones(preciousstones)4Ffinebloodstone50extremequalitybloodstoneVantianhuang(bodyjeweler)552finetianhuang(protectionofpreciousstones)553rhubarb(protection...