Question for 55+ Chanters: Zumaik's Animation and Torment of Argli

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A few quick questions about these two spells, as they are the only one's I don't have that I would even consider buying.

Zumaik's Animation:
Is it worth the stupidly high price? Reading the comparisons of levels and damage, it doesn't sound like it. But since i don't have it, I'm sort of asking before I buy. Here is how I've read it pairs up with our 49 spell.

-Kintaz's Animation(lvl 49 spell) Pet lvl range (34-38) Max hit: 52
-Zumaik's Animation(lvl 55 spell) Pet lv range (34-39) Max hit: 54

So, does it have significantly higher health/mitigation/something that justifies dumping 5k+ into the spell?

Basically, I'm asking is it 5k plat better than the 49 spell?


Torment of Argli:
This spell seems cool because I hear it stacks with our other dot line (gasping embrace, choke, etc). My main question about this is whether it can be cast on non-caster mobs. I only ask because I notice it drains mana + health, but the only mention of the spell being used that I could find was against caster mobs. Also, can anybody confirm that it does, in fact, stack with our other dot line?

Thanks a bunch!