Slayer's staff

The Slayer's staff is a staff that requires level 50 Magic and 55 Slayer to wield. Obtained from any Slayer master for 21,000 coins, it is required in order to cast the Magic Dart spell, which is the only way to harm turoth and kurask via Magic attacks.

The staff can only autocast Crumble Undead, Magic Dart, the four Wave spells and the four Surge spells. Because of its cheap price and high accuracy of Magic Dart, many players use it for Barrows and for killing Dagannoth Kings.

Players can upgrade the staff to a Slayer's staff (e) by using a slayer's enchantment on it, which increases the requirement of wielding it to 75 Magic. The enchanted staff will increase the power of Magic Dart for 2,500 casts against monsters who are killed as part of the player's slayer assignment.

In melee combat, the Slayer's staff is the most powerful (in damage/minute) weapon for level 1 in Attack, so it is a popular choice for obsidian maul pures-in-training (if they have 55 Slayer and 50 Magic).

Trivia

 * During the Draynor Bank Robbery tape, 1337sp34kr appears to be wielding a Slayer's staff.