You have a +1 bonus to attack and damage rolls made with this magic weapon And deal fire damage instead of slashing damage. Its blade can also contract into the hilt to be held safely, You may also use this to heat and melt metal and other objects.
Proficiency with a Longsword allows you to add your proficiency bonus to the attack roll for any attack you make with it.
This weapon has the following mastery property. To use this property, you must have a feature that lets you use it.
Sap. If you hit a creature with this weapon, that creature has Disadvantage on its next attack roll before the start of your next turn.
Notes: Bonus: Magic, Damage: Fire, Sorcerer, wizard, warlock, or eldritch knight only, Damage, Combat, Versatile, Sap
Epic, but you misspelled it.