The kodai wand is currently the strongest wand in Old School RuneScape. Requiring 75 Magic to wield, it is able to autocast Ancient Magicks, while providing an infinite amount of water runes. In addition, the wand has a 15% chance of negating rune costs when casting an offensive spell.
The wand is created by using a kodai insignia, obtained as a reward at the end of the Chambers of Xeric, on a master wand. When creating the wand, there will be a warning message stating that the process cannot be reverted. If confirmed, the chatbox will then state Power shoots down the length of the wand, empowering it with the darkness of Xeric's Kodai wizards.
Upon release, the Kodai wand was received as a complete drop. Jagex stated that this was unintentional, as the wand was supposed to be created with a kodai insignia and a master wand. The next week, the Kodai wand was replaced with the Kodai insignia drop and all wands that were obtained prior to the update were kept as normal.
In addition, the wand did not have its 15% chance of negating rune costs when casting offensive spells; this was added in two weeks later.
The kodai wand appears similar in design to the Elder Wand from the Harry Potter series. This is also reinforced by the fact that the Kodai wand was named the elder wand in its beta form.