Aquamarine Dagger

This once black Dagger is rusted beyond belief. The blade appears to be chipped at the tip. The hilt and guard are both a bit longer than a normal dagger. A large aquamarine crystal is fitted to the pommel, with smaller crystals running up the length of the guard. The runes of a long forgotten tongue run along the blade.

To attune to this weapon you must be under the effects of the Comprehend Languages spell, and spend an hour reading the runes that run along this dagger's blade.

You have a +1 bonus to attack and damage rolls made with this magic weapon.

This dagger does additional cold damage equal to half of your intelligence modifier rounded up. (Minimum of 1)

Once attuned to this Dagger it may be used as an arcane focus, with the stats of a +2 wand. You may use it as such even while transformed.

This dagger has a number of charges equal to your intelligence modifier, that reset at dawn.

Also, if attuned, then you may expend one of the dagger's charges to use a bonus action to rotate the blade around your palm, causing a long aqua crystalline blade to extend from the guard. For one minute, the dagger takes on the form of a longsword, gaining the versatile property, whilst keeping the finesse, and light properties. While in this form, the blade does 1d8 (1d10 versitile) force damage, and an additional 1d6 cold damage. You may also use your intelligence modifier for your attack rolls and damage.  When transformed this way, the sword sheds an bright icy blue light for 15 ft in all directions, and dim light for an additional 15 ft.

Proficiency with a Dagger allows you to add your proficiency bonus to the attack roll for any attack you make with it.

Notes: Bonus: Spell Attacks, Bonus: Magic, a spellcaster able to cast Comprehend Languages., Damage, Combat, Finesse, Light, Thrown, Nick