Rune thrownaxe

The rune throwing axe, like all throwing axes, is a members-only Ranged throwing weapon and is the second most powerful type of throwing axe, behind the dragon thrownaxe. To wield a rune throwing axe the player must have at least 40 Ranged.

They can be purchased from the Tribal Weapon Salesman at the Ranging Guild. They are also obtained as a drop from Ninja implings.

Special attack
The rune thrownaxe has a special attack, Chainhit, that ricochets off the target and hits multiple other opponents in a multi-combat area. This can target up to 5 opponents.

Each hit consumes 10% of the player's special attack energy. For example: 3 hits consumes 30%, while 5 hits consume 50%.

Many players use this in Waterbirth Island Dungeon as an efficient way of reaching the Dagannoth Kings. This is because with a pet rock and the rune thrownaxe, the player can make their way to the dungeon's sub-levels without a need of a partner. When used on the middle barricade support, the rune thrownaxe's special attack will destroy all three barricade supports without having to have another player attack it from the opposite side.

Trivia

 * To prevent obsolescence, the special attack of rune throwing axes was introduced some time after their initial release.