First and foremost, keep in mind that a mod is an outlet for your creativity. If this is primarily what drives you, then by all means go the extra mile and try to put those ideas into practice.
(Just saying cuz sts mods don't tend to get steady attention unlike other games.)

As for the content, it sounds aesthetically pleasing and the mechanics are fine but it's like 3/4 modded characters either use orb slots, do things by accumulating some resource, or both.

Then again, it looks like you might be juggling all of those enough to reach a critical mass that makes it feel unique after all. I also saw a relatively high number of dualcast and cards that exhaust, yet not much in the way of replayable card draw or returning cards from the exhaust pile. (Might've missed it skimming through, and I guess there's some retain for quasi-draw.)

inafter 2 cents

Originally posted by Zu:

I also saw a relatively high number of dualcast and cards that exhaust, yet not much in the way of replayable card draw or returning cards from the exhaust pile. (Might've missed it skimming through, and I guess there's some retain for quasi-draw.

A very valid point, I'll have to think about what to do with it, the core idea was interesting but I am questioning the viability of the mechanic; it's either irrelevant since there's not enough Dual Casing mechanics involved, or half the attacks need to be Dual Casts in which case you we need more Exhaust management - but that basically defeats the purpose of sacrificing an attack for the added effect if the exhaust simply becomes too accessible.
I might have to think about it some more, maybe toning down the power of Dual Casts added effects and make it a Discard effect; it could be more easily tuned afterwards by toying around with the availability and potency of Card Draw.

Anywho, thanks for the (actually very quick ^^) feedback, it's likely that there's more thoughts to put into that one mechanic!

Can you code? It's hard to tell how well this will play out until we get to see more cards/more mechanics.

Nothing fundamentally wrong with it, but it'll come down to how much you have access to those keywords, what they can do, etc...

I like the enflamed debuff although it's a bit close to poison. On the other hand, the Fiery Faith of Fervor seems like it could be strong/go infinite, but what i said above applies.

In my opinion the "if there's x, do y, otherwise, if there's z but no y, do a, and if there's no x or no z, do b" type mechanic can get a bit convoluted, so be careful of creating things that have too many effects/too many conditions. Likewise, try to use the already implemented keywords as much as possible, you don't want to create too many unnecessary keywords (not saying there are, though something like backfire could perhaps just say "lose x hp"? I can't really judge without more context).

Originally posted by DJDiceZ:

Can you code? It's hard to tell how well this will play out until we get to see more cards/more mechanics.

Yeah I've looks at how the API works and I'm pretty confident I've gotten most of the tools in had to do most of these happen. It's more on a pla

Originally posted by DJDiceZ:

I like the enflamed debuff although it's a bit close to poison. On the other hand, the Fiery Faith of Fervor seems like it could be strong/go infinite, but what i said above applies.

The idea behind Enflamed compared to poison was to have it be more dynamic than poison with a bit more fluctuation in the amount and have it be a Block shredding effect rather than a bypass like the one Silent uses.

Originally posted by DJDiceZ:

IIn my opinion the "if there's x, do y, otherwise, if there's z but no y, do a, and if there's no x or no z, do b" type mechanic can get a bit convoluted, so be careful of creating things that have too many effects/too many conditions.

Agreed that the behaviour is a bit convoluted but I'm sure you're referring to Fiery Faith of Fervor whom either replace a Fiery Faith of Wrath or grants you ashes if there's no available devotions and I believe you are right in the lack of clarity about it - I'm just unsure how to properly say it otherwise.

Originally posted by DJDiceZ:

ILikewise, try to use the already implemented keywords as much as possible, you don't want to create too many unnecessary keywords (not saying there are, though something like backfire could perhaps just say "lose x hp"? I can't really judge without more context).

Backfire can totally be replaced by loose X HP and I think I am gonna do just that! I feel like Dualcast is a right keyword to add (I'll admit it being really inspired by the Rite keyword from the Cursed mod; hence why I'm also thinking about changing it) but Ashen might be just a lazy way to avoid writing "Whenever this Card is Exhausted, gain X Cinders." which could also be bumped out since it's how retail cards are written (like Sentinel for instance)

Thanks for your comments, it's super helpful for me to have that kind of feedback ^^

Originally posted by Silver:

I'm just unsure how to properly say it otherwise.

Fervor
Gain E. Draw 1 card.
Can Crumble Wrath
to free up a slot.
Crumbles itself otherwise.

And Crumble is the tentative keyword for gaining ashes which incidentally do not need a keyword of their own imo, like card types / names.