The Silver Sword of the Astral Plane is a legendary sword in Baldur’s Gate 3 that has a special weapon action and gives Githyanki wielders extra buffs.
Baldur’s Gate 3 Silver Sword of the Astral Plane Stats
Silver Sword of the Astral Plane
Legendary
2d6+3 (5~15) – Slashing
Githborn Psionic Resistance: A githyanki holding this weapon has Advantage on Intelligence, Wisdom, and Charisma Saving Throws, resistance to Psychic damage, and cannot be Charmed.
Githborn Psionic Weapon: When wielded by a githyanki this weapon deals an additional 1d6 Psychic damage.
Soulbreaker: Rend the enemy’s body and soul, dealing additional Psychic damage equal to your proficiency bonus, and possibly Stun them
Proficiency with this weapon type unlocks:
- Cleave: Swing your weapon in a large arc to attack up to 3 enemies at once. They each take half the damage your weapon usually deals.
- Lacerate: Slash at your target’s vital points to make it Bleed.
- Pommel Strike: Make a non-lethal attack against an enemy and possibly Daze them.
The fervour with which the githyanki express devotion to their queen is admirable to some, disquieting to others. When confronted with the fallibility of the divine (since no one is wholly perfect), who knows what reactions such folk might evince.
2.7 
1,300 
Baldur’s Gate 3 Silver Sword of the Astral Plane Location
The Silver Sword of the Astral Plane is held by Kith’rak Voss in the Lower City Sewers (X: -70 Y: 828) during Act 3. Voss will reward you with the sword if you get the Orphic Hammer and show it to him, or you can kill him and take the sword.
Additionally, you can also attempt to take the sword from Voss during the Act 1 encounter with the Githyanki on the Mountain Pass (X: -139 Y: 561). This will like require you to save/reload, as you will need to cast a successful Command (Drop) spell and then defeat the remaining Githyanki before you can claim it.
