Binding Vow Feat
You gain the following benefits.
Restricted Arsenal. You cannot wield any weapon or armor with the sole exception being their Pact of the Blade weapon (being a Longsword). Any weapon or armor you try to wield or use repels away from you with just enough force to make it impossible for you to touch it.
Sharpened Magic. The Pact of the Blade weapon summoned by you gains the benefits of a +3 Weapon.
Enspelled Pact. The Pact of the Blade weapon summoned by you acts as an Enspelled Weapon with the spell Thunderous Smite engraved in it. You can cast Thunderous Smite with that weapon once per turn.
Matured Spell. Your Pact of the Blade's engraved spell; Thunderous Smite, grows with you and can be casted at the level of your highest spell slot (up to level 5).
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