Dagger of Five Elements

The dagger's handle is made from exquisitely-carved, blackened wood. The steel blade is engraved on each side with five druidic symbols representing fire, earth, ice, lightning and wind. 
You gain +1 to attack and damage rolls with this magic weapon. This dagger has the power to create an aura of pure elemental energy. It has 2 charges, and it recovers 1 charge every short rest, 2 every long rest. You can use a bonus action to activate the dagger for 1 minute, expending 1 charge to do so. The activated dagger then deals an additional 1d6 damage on a hit, with the type based on the chosen element, which must be chosen on activation: 

• fire damage (Fire)
• cold damage (Ice)
• slashing damage (Wind)
• lightning damage (Lightning)
• bludgeoning damage (Earth). 

Item type

Weapon, Melee