The Ranger Hat has been changes as well as the Lyrica Hat. The effects are not on the items yet however they can all be bought from a merchant right outside the prontera smithy for zeny.
Were trying to get the original effects working so for the ranger hat it is as follows:
This is discussing the preview 2 and preview 3 headgears that we recently implemented as rewards from the Fourth of July quest. As mentioned in the notes, the headgear effects were significantly different than how they were proposed and many players are concerned about balance issues introduced by the new gears as received from kRO.
The original intent of the headgears was to give a boost to less common builds but some effects are not possible in the game without extensive development time. Some effects were tried but would not work, so the kRO team developed alterate effects. In several cases these are very different from the originally proposed effects so I am opening this thread for suggestions on modifications that can be tried to bring these closer to the spirit of the project.
I will be posting the feedback from kRO on the reasoning why certain effects would not work or were requested to be changed. Please understand that some effects are not possible in the game. We are looking for alternative suggestions in those cases.
Round 1 we are going to look at some of the headgears who had effects changed quite a bit.
Autumn Hairband 
Increases Fire trap and ice trap damage by 50%.
Reduced damage done by arrow storm by 50%.
If upgraded to +7 or higher, increases ATK by 5 for every 5 base INT.
If upgraded to +9 or higher, increases Fire Trap and Ice Trap damage by an additional 25%
The development team has told us that it was not possible to modify the damage for the fire and ice traps, so we are looking for other ways to make that work or to seek alternative effects that would still help trap rangers.
Headgear Upper / Minstrel only / Lv.100 / Slot1 / Weight20 / DEF15 / Possible to refine / Not possible to destroy
Reduces fixed casting time of all skills by 5% for each level of Voice Lessons learned.
If upgraded to +7 or higher, increases Severe Rainstorm damage by 25%.
If upgraded to +9 or higher, reduces the SP cost of Severe Rainstorm by 50%.
Headgear Upper / Sura only / Lv.100 / Slot1 / Weight20 / DEF15 / Possible to refine / Not possible to destroy
-If Dragon Combo is chained after Raging Trifecta Blow, autocasts highest level learned Fallen Empire.
-If upgraded to +7, Has a random chance of casting Raging Trifecta Blow while physically attacking for 10 seconds.
-If upgraded to +9, increases the damage of Fallen Empire by 10%
The comment by the devs is that it is not possible to have a passive skill auto-trigger like that, though I wonder if the proc rate could be increased.
Each headgear targets or attempts to target a niche build that is not of the mainstream (if possible, not all will come out like this).
I would like to re-iterate the point of these are for PvM and not for PvP or WoE so don't even try to suggest otherwise as it will be ignored.