Lord Yelinak (Skyshrine)
Telkorenar (ToV West)
Gozzrem (ToV West)
Lendiniara the Keeper (ToV West)
Dozekar the Cursed (ToV East a.k.a. Halls of Testing)
Aaryonar (ToV North)
Lady Mirinella (ToV North)
Lady Nevederia (ToV North)
Lord Feshlak (ToV North)
Lord Koi'Doken (ToV North)
Lord Kreizenn (ToV North)
Lord Vyemm (ToV North)
Vulak`Aerr (ToV North)
Ventani the Warder (Sleeper's Tomb)
Nanzata the Warder (Sleeper's Tomb)
Tukaarak the Warder (Sleeper's Tomb)
Hraashna the Warder (Sleeper's Tomb)
Kildrukaun the Ancient (Sleeper's Tomb)
Tjudawos the Ancient (Sleeper's Tomb)
Vyskudra the Ancient (Sleeper's Tomb)
Zeixshi'Kar the Ancient (Sleeper's Tomb)
This list is not mine, and I haven't tested it since I only recently got the spell and haven't even seen most of these dragons yet. Apparently, it doesn't work on Sontalak (I did try that). :P