Too Hot to Handle

A creature you can see feels the weapon it's holding instantly heat up to a near -first-degree burn temperature for 2 seconds.

On a successful Constitution Saving Throw, the creature is able to retain its weapon in its hand(s) but still suffers 1d4 fire damage.

On a fail, it still suffers 1d4 fire damage, BUT it also drops that weapon and must use up an action to pick it up on its next turn. It also can't use the weapon for any reactions or opportunity attacks before having picked it back up (obviously).