This is a semi-rare rune which can be inserted into Socketed Items. Requires level 39 to use. In Single Player, Open, and Ladder, transmuting three Ko Runes and a Flawed Sapphire in the Horadric Cube yields a Fal Rune.
- Weapons: +10 To Dexterity
- Armor: +10 To Dexterity
- Helms: +10 To Dexterity
- Shield: +10 To Dexterity
The Ko rune is used in the following Rune Words:
- Heart of the Oak
- Voice of Reason
- Ko rune may be received as a reward for completion of the Hellforge quest in Nightmare and Hell difficulty; Ko is near the high end of runes that may be received in Nightmare, and at or near the low end of runes received in Hell difficulty.