These Dragons are Lord Yelinak, Sontalak, Lendiniara, Klandicar and Zlandicar.
These are all higher-level encounters. You will not be able to do these solo, and for the most part you will not be able to do this without some guild support.
Also, King Tormax (always), Vindi (rarely) and Velketor (rarely) drop shard of a tailsman that can be used to turn in also.
Yup, Tormax always but I believe they nerfed Vindi long ago, never seen it on Veletor. I love Kael fights though, Tormax, Vindi, Statue and Avatar are always fun and worth beating down. Vindi is on an 8 hr spawn timer so you could just keep slapping him down and see what he drops.
Well, Sleepers Tomb is one of the zones I have always been curious about so if someone care to assist me on it, I'd like to get keyed to that place. 
I have a few toons with the talisman but I've never done the turn-in...something about going in to the tomb of the most powerful dragon in history alone never sat well with me. (even if Karafrym is no longer home)
I would be curious as to how many in our guild have or would be interested in farming sleepers tomb keys...primal / prismatic just isn't what it use to be and no dwarf mask for the rogues..
just my 2cp...
Happy Hunting!!
I have been very interested in aquiring this key for some time, but have had so much going on that I haven't found the time to quest for it..... I would love to work on getting keyed for this zone!
Granted the Prismatic weapons base stats arent as nice as they once were. However, I still swap mine in and out on my warrior when I am 2 boxing just for the buff . With the Bandoleer its even easier now than it once was and its a very nice buff .
As for farming you can get a decent amount of Prismatic weapons without going very deep into ST.
We've gotten past the biggest barrier to the ST key by raiding NToV. Previously, Tormax (and Zlandicar but hes usually permacamped) was the only one we could raid since we were worried about faction. Now that weve hit NToV and trashed our CoV faction, killing the CoV first broods is not a problem. Of these, Klandicar and Sontalek are the easiest to get to. Yelenik is at the top of the skyshrine tower and would require an extremely long raid to get to or a coth set up. Lenerda the Keeper isnt as bad but would require a crawl though WToV or a Coth.
