I've been trying to find all the Tomes over the past few weeks and relied on mostly going island to island hoping to find an Ashen Guardian. I noticed that after collecting probably double of every other tome that not a single Tome of Resurrection was found from an Ashen Guardian that drops both the Note and the Key. Is this a glitch or do the random Ashen Guardians on islands just not drop chests containing the Tomes of Resurrection?
I've been only finding some of the Tomes of Resurrection from Raid on a Skeleton Fort voyages probably due to there being both an Ashen Guardian and a Key Master. Are there any other voyages or locations that spawn both an Ashen Guardian and a Key Master every time?