I think a heavy sword would be great there would only be one heavy sword it would either be crafted or looted depands on how mojang wants it to be optained. It would only have a charged attacks once charged you would do an heavy slam onto the ground and this would create some aoe damage in a cone in front of you there would be particles to show the cone. The sword if crafted could be crafted from 2 parts a handle its woul cost 2 sitcks (one in the middle one at the bottom middle line) 2 iron ingots(in the top right and left corners) and a diamont (between the iron ingots) and a blade crafted for 3 iron ingots in a line on the middle. If looted. Maybe a great knight could give it or some thing but it shoold be hard to get as the sword will be stronger then a diamond sword with no enchantments. For the enchantements there could be a more range for the cone. A dash instead off a slam things that wouod be really unique but not too much op. Wee don't want weapons that can kill too fast. It must be balanced if added to the game. This would be interesting as a weapon choise. A stronger but slower sword that would be bigerreur and longer then the classic sword that wee all know and love.