If you are going to require certain weapons for certain events then at the very least it would be nice to have all the mana colors available for selection. At the time of this post not a single blue pans vale weapon exists.
We’ve yet to have a weapon like Fist of Heaven, Staff of Storms, etc. but for Wildfolk. If the devs ever make that weapon for any future Invasions, hopefully it’ll take Blue Mana.