Exterminate Undead

Exterminate Undead is a powerful spell from Standard Spellbook that requires a Magic level of 93. It can hit a maximum of 450 life points (under the right circumstances though, it can hit up to 550 life points). It can only hit undead monsters, such as Shades, Zombies, Skeletons, Ghosts, low-levelled Revenants, Zogres and Ankous. It does not work on the Barrows brothers, certain high-levelled Revenants, mummies, Count Draynor, or Nazastarool. When casted, the spell hits all enemies in a 3x3 area, making it ideal for killing multiple undead enemies.

If no staff is used, Exterminate Undead costs 1560 coins for each cast. Members can use dust runes which brings the price down to 115 coins for each cast, also allowing them to use equipment such as the Staff of Light and an Arcane stream necklace to give up to a 30% max hit boost. They can also use an air staff or an earth staff to reduce the price more.

Trivia

 * Attempting to cast Exterminate Undead on anything that is not undead will give you the message "This spell only affects skeletons, zombies, ghosts and shades".
 * Despite Banshees being undead, Exterminate Undead cannot be used against the Banshee Champion underneath the Champion's Guild. As previously stated, it brings up the message, "This spell only affects skeletons, zombies, ghosts and shades"