Flowing Thought during PoP was capped at 15, that part is correct.
However HP Regeneration effects stacked beyond 15. For some reason the number 35 sticks in my mind. This is backed up by your third link.
I know ATK effects from Aura of Battle type line, stacked up to 250 ATK.
Quote:
|
For worn effects it does not matter what slot they are in. Some worn effects stack (e.g. +hp regen and +mana regen). These effects are generally capped, such as worn mana regen capped at 15/tick, hp regen at 35/tick, and ATK at 250 (I think). Other worn effects do not stack, such as focus effects where only the best effect will take priority and the others will be ignored.
|
That is PoP era though. Not sure what the exact mechanic for regen was during Velious. I know FT took the highest value.