[Autumn]

Gain +20 Evade for 1 attack, 3 rounds after casting a Sylphid spell.

This is the current text and effect. 

It's bad. 

That's really bad.

This nerf consolidated a lot of evade setups so that non rogues can't really reach evade cap, something that is one hundred and ten percent necessary in the current hit meta.

I'll be honest, I think a straight up  revert is fine. Take it to 25/3 rounds again. Please. Un-centralize evades.

No? It got nerfed for a reason. It was way too powerful being 25 evade with the only condition of "Casting a wind spell." This condition also included Auto-enchant.

Because it's an item slot and not a class skill, it was versatile in how many builds it could apply to, while you can make the argument that Evoker gets no evade buffs, Spellthief does, and all the evade buffs it can cast are coincidentally also wind spells that work in conjunction with this, instantly capping your evade.

Coinciding with this is also the strong option of being able to get a huge evade buff from any wind spell, which when it comes to stuff like Air Pressure and Typhur, is incredibly hard to play against.