From what I've read, these ideas intrigued me.
Sixth Elder God?
I thought Elder Gods looked down on us like ants, beyond our thoughts and comprehension.
Why would one cooperate with lower lifeforms let alone talk to us. Then again, this 6th Elder is apparently 'not of form', suggesting it needs help finding a vessel, like Zaros once did.
Zaros?
Knowing Sliske has the Catalyst and the Siphon gave him pause, Sliske also grew tired of Zaros long ago, and tried to convince us to sabotage his return.
Kerapac?
Kerapac certainly does have the brutally honest attitude, being cold, logical and calculating, much like Zaros. It is very un-Dactyl-like to allow a false user/stone toucher to experiment on such a cause of pain. Perhaps an unknown person above Kerapac is calling the shots?
Strange Glowing Orb?
Assuming the trade sequence is canon. The Entity within the orb seems evil and observant. It doesn't know much about runes suggesting it is/was so divine it doesnt need runes, or that it is so alien that the Catalyst/Siphon are totally unrelated to it.
Xau-Tak?
Confirmed not to be the master
Other Influences?
There was that Abyssal creature from Heart of Stone, we're yet to hear from them.
The Schism/Rift entity warps minds, it also snaps souls from their hosts like Death's scythe.
Potentially Sliske has another personality which would explain a whole lot.
Other False users, a surviving Kethsian for instance.
Perhaps its the Queen of Ashes.
Balance Elemental from a different time? (it knew the Stones location)
Any other ideas?
24-May-2016 14:49:57