ToME: the Tales of Maj'Eyal

I've recently aquired the Frost Lord's Chain, and being rather forgetful of instant cast buffs like it, I set it to auto cast when enemies are visible. I had already done the same with Telugoroth form, and I expected one or the other to activate. However, it looks like both did, so now I've got both buffs at once.

Does anyone have any idea how they stack? Or if they do at all?

I think you would be the most experienced person to answer that question.

Posted this as soon as it happened since I assumed they would cast one after the other.

Looking over the stats, it looks like they just add together. Perfectly stacking. I've got my 113% cold affinity, massive temporal damage boost (don't know if it all converts to temporal damage-I'm using Elemental Fury which overwrites Telugoroth's form damage change), status immunities, all the talents both forms grant, everything. Probably would be better to use it manually, but I always forget, so better this than nothing.

And, since they stack so very nicely, I wonder what it'd be like to run an Adventurer with as many forms as possible active at once.