Ethereal Weapon/Armor

You can imbue up to 3 Signet Rings worth each at least 500 Gold with the ability to transmute into any weapon or armor (up to legendary rarity) known by the caster (must be approved by the DM) for a duration of 8 hours.

The wearer of the signet ring can as an action activate the ring in order to trigger the transmutation into the weapon or armor assigned to it.

The Signet Ring is consumed upon activation of the spell and is instead replaced with the weapon or armor. The new ethereal weapon or armor has a duration of 1 hour and can only be removed by the wearer by being dispelled. 

All restrictions of the item apply with the exception of any attunement requirements. The item is considered an ethereal copy and therefore any sentient weapon effects do not apply however the original sentient weapon or armor is aware of the existance and use of the copy. 

At Higher Levels. When you cast this spell using a spell slot of 4th level or higher, you can imbue an additional signet ring for each additional spell slot.