For your recent post:
he dosent cast 9th lvl spells man, it cast till 5th spell level
From your description of the Elemental Warden:
At 11th level, you infuse yourself with the Elemental magic, you gain a free spell slot of 6th-level per long rest.
This slot upgrades to 7th-level spell slot at 13th level, 8th-level spell slot at 15th level and 9th-level spell slot at 17th level.
You explicitly give him a power to cast 9th level spells, I'm not sure how you can say he doesn't. He doesn't natively have any spells known of that level, but at the very least it's for upcasting. It is also possible to combine this with other ways to get spells known known to do some powerful things. Bardic Secrets or simply a level in wizard and then copy high level spells into your spellbook are two ways with multiclassing.
i have being working on this class since 3e and the class is an hybrid combatant taht had a similiar ability
I've tried to convert some earlier edition characters who were heavy on buffing, and 5e has a very different feel betweent he lack of misc buffs from the christmas tree of items, plus much less spell buffs, concentration for maybe one per caster instead of a bunch that last from 3e. What was acceptable and even commonplace back in 3e doesn't fit the 5e paradigm. I'm glad it has pedigree, but if you want to convert it to 5e, you need to update it for that.
Have you read paladin auras? they are way to more powerful, they persist and the bonuses are higher
The paladin aura lack flexibility to change. The paladin auras don't provide full healing between encounters, or most of the effects of the heavy armor mastery feat to everyone, or break bounded accuracy either to hit or to AC for the PCs. Or again when you are maxing out with nine choices of aura and have the right aura for any situation. Diplomatic encounter, give everyone a bonus to Chr checks! Because the elemental forces makes Throg the Berserker more pretty, I guess.
Paladins get their first aura at 6th level instead of 1st, in a 10'r instead of 30'r, locked into giving Charisma to saves. Which means you need to keep boosting Chr unlike automatic advances linked to proficiency bonus. It doesn't get up to 30' until 18th level, and let me tell you that especially outdoors there is a LOAD of difference between 10'r and 30'r of you.
i have test this a lot by now and i can asure you is not near to overpower, is way more balanced that you think at least in low levels cuz i ahvent test it in high ones
I'd like to give this the benefit of the doubt. But just to give strength to your claim, was that testing in 5e? You mention you've been working on this since 3e, that's a long time. Has it been tested by a group that doesn't include you? Have you told people to try and abuse it and see what they come up with?
You mention low level testing - at higher levels you get (a) more auras and (b) a higher bonus for them. That's the old linear fighter/quadratic wizard. More, higher bonuses is going to be a lot more powerful then a single, small bonus, even if that small bonus is already pretty good because a lot of people get it.
Have you tested with party synergies, where you have an aura to grant to-hit, a cleric with bless, and a bunch of characters with Sharpshooter/Great Weapon Master that now do a lot more damage on every attack with minimal downside?
Have you tested with multiclassing? Another class being able to take a single level to get two auras that go up with proficiency is nice, and a bit of multiclassing out is a good way to make better use of those high level slots.