I know the trident just came out, (be honest its not all it's cracked up to be) but I had an idea for a new weapon in minecraft. I think the game could use a weapon like a wand. The way it would work, is that you would craft the wand itself out of a diamond, obsidian, and firecharge (firecharge could be replaced with a ghast tear or nether star) After crafting, you get the wand which does a base damage equal to an iron sword. However, its attack speed should be a little slower. From there players should be able to put the wand in the crafting table along with any potion. This would give the wand the powers of that potion and deal anything it hits a diluted effect of the potion, kind of like a tipped arrow. (of course with times of effect ranging from like 5 to 10 seconds) The wand should also have a special enchantment which upgrades the strength and maybe time of the potion effect when it hits mobs.
I don't know if this is possible and I am not sure how it would effect PvP, but it seems like a weapon that could be fun, useful, and not OP. While I don't know how hard this would be to mod, I think it would liven up the weapon selection quite a bit and maybe even make witches more dangerous if they weild it.
True, however I think most of the effects would make more sense coming from a wand than a sword, but using a wand gives the opportunity to add another weapon into the game (Even with the trident, the weapon selection is very lack-luster) Also it would be a weapon that witches could use and make them actually scary to fight against. (In all reality all you have to do to fight a witch is to hit it once and then it stops a attacking you to drink a health potion giving the witch a chance to have a wand instead of potions would solve that problem))