hmm... just thinking of this now, because the sword could reach a spidertron-6000, IT LOOKS LIKE DOBOROG NEEDS TO START RESEARCH ON SPIDERTRON-7000! xD and, generally speaking, I find that the levels that I get swarmed on are mid to late game-diamond, titanium, and some gold levels, so the (for now i'll just call it the energy staff :P) energy staff would come into play at the perfect time :D
Viewing post in New Weapon Idea: Energy Staff
Yes, this idea of a weapon is more meant to assist the player further in mid-late levels, killing a massive amount of enemies with one attack, then you can use your sword, bow, or hammer to finish off the any few that are left or for specific enemies. And that just made me think of something, "POWER"/"BOSS" weapons. A cool idea that involves unlocking these kinds of weapons after a certain point in the game or beating a certain boss. Only one of these weapons can be equipped by the player at a time, and they are specialized to promote their own playstyle and have their own unique drawbacks, like the energy staff we were talking about, and assist the player when he gets to certain situations and get pass the higher tier levels.