I am aware that an item suggestion has been posted before about an EMP, my suggestion shares the same name, but is completely different in concept.
Basically, you place a certain block and all TNTs, rockets, c4s, big TNTs and mines on the map are destroyed. This also removes lava. The cost would be around 500 points? There could also be an upgrade enabling it to disarm nukes and cannons. If this upgrade is impossible to code, then you should just make it disarm nukes and cannons in the first place. For this of you who think that 500 points is too cheap, keep in mind it also disarms allied weapons as well.
Basically, you place a certain block and all TNTs, rockets, c4s, big TNTs and mines on the map are destroyed. This also removes lava. The cost would be around 500 points? There could also be an upgrade enabling it to disarm nukes and cannons. If this upgrade is impossible to code, then you should just make it disarm nukes and cannons in the first place. For this of you who think that 500 points is too cheap, keep in mind it also disarms allied weapons as well.