In Frozen in Time, a PC found a katana dating from the Eternal Shogunate of the Lich Shogun. It was listed as +1.

Inspired by the katana dating from the Eternal Shogunate of the Lich Shogun, here are rules for awakening swords.

When items sit in a ruin for a long time, especially when they are removed from their original context they fade and shrivel in power. To restore the item’s puissance they have to be awakened, usually through a short ritual that connects the item with its original purpose.

How to wake up an item can be discovered via a Cleric’s Detect Magic spell of 16 or higher or a DC 20 INT skill roll (+1d if you have a relevant library at hand).

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Katana of the Eternal Shogunate of the Lich Shogun

I have to keep this secret because it is in game. Sorry.

Awaken

REDACTED

Powers

Once the sword is awakened, it will REDACTED

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Silver Sword of the Lich-Queen

These bastard swords are made from a metal that no one on the Prime Material Plane can recognize, having been forged in dragon-fire, crafted from the bones of a dead god.

Awaken

To awaken the blade from its dormant state, the wielder must deal the killing blow to either a Githzarai or an Illithid.

Powers

Once it is awakened the blade will glow a ghostly silver. It will allow the wielder to cut extra-planar’s ties to target’s home plane, stranding them on the plane where the sword took their hit points down to less than half. Silver Swords of the Lich Queen do double damage and +1d to-hit against any manacles, chains or other devices used to tether any creature against their will. If the blade is gently laid in a pool of water, it will point to the nearest gate to the astral plane, Illithid or Githzarai, as per the wielder’s request.

Once the blade is awakened, Githyanki will seek out it (3d30 months for the first Githyanki Silver Retrieval Platoon to hone in on the blade’s whereabouts.) likely killing the wielder and anyone who dares defend the foul thief.