Thanks, Xero. This definitely isn't desirable.
When this spell was initially drawn up and created I don't think stacking was particularly considered fully. If it was, we've just changed two of those spells so they do stack with each other but the effects for this new spell were "thought up" years ago. So any plans Vaion may have made for stacking back then probably wouldn't work now anyway. All I did was find the spell that had been made a couple years ago and create the scripts to trigger the aoe stuff (innately impossible with source eqemu spells).
I still want this spell's theme to persist (aoe procs) because that's really fun and unique but there's a big part of me that feels that the buffs themselves just aren't necessary. In short, yes I think it was designed to replace the staff and not stack with two other spells but given the recent changes to the mage pet clicks and other reasons mentioned below I don't think that's really what should be the take home benefit of Elemental Glory.
I'm actually quite happy with the state of the mage pet buffs after the recent change to the t6 and T9 clicks. So Elemental Glory is disrupting that needlessly and the simple answer is get rid of the similar buffs.
I'll have a think.
But the two options I can see now are:
1. The original suggestion seems to me to be "replace the aged sarnak staff", reading the posts from when the thread started in 2016. If everyone wants that then I'll make it so elemental glory stacks with the T9 click and overwrites the t6 click. Have to say I'm not sold on this one though. Elemental glory and the staff are both t6. Seems a bit redundant to have two spells so similar in one tier. I'd rather...
2. The proc is what makes this spell unique. I think we just keep it to that and perhaps one buff that's less obvious, and not included in the other buffs, allowing all three buffs to stack and bring different things to the table. Any ideas are welcome as to what the new buff may be but I'll get this sorted ether way in the next few days.
----
Also, funny side effect of this spell change I noticed. The mages in tactics were broken. Veil of Mastery was one of their spells. So changing it to a pet buff lead to them attempting to cast it infinitely but failing due to having no pet,which they never cast because they kept trying to buff the pet they couldn't cast lol.
So that's fixed now. You'll be pleased to know that they now use the Ancient DS instead. So yes, they got a buff (+50 damage), sorry

You'll thank me for not using Chaotic Veil

(double the damage).
Just need to respawn the zone which I'll do tomorrow night so if anyone does notice them behaving oddly, killing them should reset the issue when they pop again.