Korasi's sword

Korasi's Sword is one of the best weapons for PvM, as well as PK'ing as the special attack can cause a substantial amount of damage to monsters and players alike. Its special attack can hit up to a maximum damage of over 80 Hitpoints on other players and a maximum of 106 on monsters. It can be obtained from the Soulsplit Shop for 8,500 Credits or purchased from other players.

Requirements
The sword requires 78 Attack and 10 Defence to wield, along with the completion of the Lost City Quest.

Uses
The Korasi's sword is not generally seen as a main hand weapon for sustained damage, this is because it is easily outgunned in terms of accuracy and damage by chaotics and even the Abyssal whip. However it's potent special attack which deals Magic damage allows for strong damage against monsters weak to that attack style, namely warrior type monsters.

Trivia

 * Unlike most Melee weapons, the Special Attack for the Korasi's Sword does Magic-based damage rather than Melee-based damage, making it very useful as a rushing weapon to hit past protection Prayers.
 * One side of the Korasi's Sword is lighter, the other side is darker.
 * It is possible to combo a double Korasi's Sword Special Attack with a Ring of Vigour, even though it uses 108% Special Attack. Using a Ring of Vigour, as well as something like a Magic Longbow, which uses 35% of the Special Attack bar. Combined with a Ring of Vigour, this becomes 31.5%, leaving you with 68% or 69% of the Special Attack bar left. Then you wait until it is at 88%, and when it ticks to 98% you start a timer and wait till 26-28 seconds. You then special with the Korasi's Sword, and the timer for the Special Attack recharge will tick over so you can do another Korasi's Sword Special Attack instantly. Alternatively, you can just drink a Special Restore Potion to heal your special, and it will allow you to double spec.