Fan of Knives

Fan of Knives is a Devices  skill in Diablo III.

In-game
Hits all enemies within 20 yards of the Demon Hunter with a spray of blades, dealing Physical damage and slowing them down. Knives do not count as missiles.

Runes

 * Pinpoint Accuracy: damage type changes to Lightning, damage increases to 1600%, but cooldown increases to 15 seconds.
 * Bladed Armor: damage type changes to Cold, and on each cast, gain 40% additional armor for 6 seconds. This effect does not stack.
 * Knives Expert: damage type changes to Fire, removes the cooldown, but adds a 30 Hatred cost.
 * Fan of Daggers: damage type turns to Fire, and all enemies hit are Stunned for 3 seconds.
 * Assassin's Knives: in addition to normal effect, also throw five long-range (60 yards) knives that deal 620% damage as Physical to 5 additional enemies, no more than one knife per target. Can target the enemies hit by the Fan itself, provided any of them survived the hit.

Non-rune enhancements

 * Lord Greenstone's Fan (Legendary Dagger): every second, increases damage of the next Fan of Knives by 300-400%, stacking up to 30 times, reset after each cast.

Passives

 * Numbing Traps: enemies hit with the Fan of Knives deal 25% less damage for 5 seconds.

Trivia

 * Skills of the same name and similar functionality also exist in Warcraft III and World of Warcraft.