An armblade is a magic weapon that attaches to your arm, becoming inseparable from you as long as you're attuned to it. To attune to this item, you must hold it against your forearm for the entire attunement period.
As a bonus action, you can retract the armblade into your forearm or extend it from there. While it is extended, you can use the weapon as if you were holding it, and you can't use that hand for other purposes.
Your magic item is a longsword that has been absorbed into your twilight arm and now acts as a arm blade that you can make appear at will. also it has lost the versatile property making it do 1d10 damage now instead of the 1d8 or 1d10 damage.
Path of the moon tier 1: your twilight sanctuary gains a innate healing ability where anyone including your self is in it they heal for 2d4 + half your cleric level.
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: Warforged, Damage, Combat, Versatile, Sap
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