Swords have been around since the beginning of humanity and many other weapons. But if we could control the following elements: Fire, Wind, Water, Gravity and energy (Lighting).
What would be the best element for a melee weapon and also what would be the weapon type?
The magic system:
Weapons are made with a magical conductive steel. You wear a protective glove when holding a burning blade for example.
Magic respects some laws of physics but defies others. Magic works with line of sight and its range is limited by it.
The gravity magic is a bit odd. You can make your weapon superheavy or super light, throw a giant shuriken or arrow and turn it heavy at range.
The wind magic is odd too. You throw a slash and a wind wave at your target. Works better with large weapons.
The water magic: You can freeze water enough to rival metal in strength. Like, inside a hammer? Or around your sword?