You seem to lack the outline and shadow on your sprites. I don’t know what you’re using, but I do suggest following POWER’s guide to spriting.
Armor: A Fire Armor that offers slightly more defense and vitality? Eh, it’s alright at best.
The description is a bit boring, I find, so here’s my take on it:
Armor does not make one a warrior: it is one’s spirit that does.
“Ring”: As stated earlier, too strong. I’d suggest making it more attack-focused - say, 6 attack, 125 HP? The description is a bit lackluster. À plus!
The darkness consumes me, but not my flame, as it lights my path still.
Helm: Kind of an odd sprite…? Looks a lot like a Tavros Taurus symbol… Anyway, you should define the stats some more. If it gives both Berserk and Damaging for 5 seconds to party, it’s probably a tad too broken. I’d suggest the Berserk to stay the same, but lower the Damaging buff to about 2 or 3 seconds.
The description is alright, so I’ll instead polish it - and give an alternative version!
“Expose one’s heart, and one will gain strength beyond their imagination.” Inscription, in the holy language.