Foebane +3 is an enchanted bastard sword which inflicts 2d4 +3 points of damage to enemies, and +6 points of damage to shapeshifters, undead, and all extra-planar beings, such as demons and planetars. The weapon has +3 bonus to THAC0, it weighs 7 lbs, and it has a speed factor of 5. It requires 11 strength to wield. This item appears in Baldur's Gate II: Throne of Bhaal.
It can be found on the first floor of Watcher's Keep.
|“||The Archmage Demron created this powerful blade for Captain Fflar of Myth Drannor. When the elven city fell, the sword was lost beneath the rubble of the once great metropolis.||”|
Foebane can be upgraded by butler Cespenar, which requires Fflar's Scabbard and some gold. Foebane +5 now inflicts 2d4 +5 points of damage to enemies, and +6 points of damage to shapeshifters, undead, and all extra-planar beings, such as demons and planetars. The thaco bonus is now +5, and the weight and speed factor have been reduced by 2 units. The weapon gives the wearer +1 bonus to all saving throws and, every time the weapon hits, Larloch's Minor Drain is cast instantly at the target. There is no save against the spell.
|“||Reunited with Fflar's Scabbard, Foebane is an even greater weapon than the legends claimed.||”|
The game states that it does bonus damage against all extra-planar beings, but it doesn't actually do extra damage against planetars and many extra-planar beings. Most extra-planar beings that appear in the game (such as elementals, genies/djinni, mephits, and githyanki) do not take extra damage from the sword. This is the case regardless of whichever version of the weapon you are using.
In Baldur's Gate II: Enhanced Edition, the description of the bonus damage was altered. Game update v1.3 specifies that the bonus damage applies to demons and devils instead of all extra-planar beings.
& = Before upgrading
! = After upgrading