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NextDelay is a property of missiles (i.e., anything that flies across the screen, including arrows, novas and many skills) that activates a hidden "hit timer" that limits how often any missile with NextDelay can damage a single target. This works similarly to the infamous Casting Delay, which limits how often any spell with Casting Delay can be cast. The difference is that the hit timer doesn't prevent you from attacking, it just disables collisions between the affected monster and any missiles with NextDelay until the timer runs out.

So, the moment a certain skill from the following list damages a monster, it prevents every other skill on the list from hitting the said monster for the original skill's NextDelay duration (whether from you or any other character).

Skills affected by NextDelay

25-Frame Delay (1 second)

  • Shock Web
  • Blade Sentinel
  • Twister
  • Tornado

10-Frame Delay (0.4 seconds)

  • Volcano (initial eruption)

6-Frame Delay (0.24 seconds)

  • War Cry
  • Grim Ward

5-Frame Delay (0.2 seconds)

  • Fissure
  • Volcano (small fireball)

4-Frame Delay (0.16 seconds)

  • Multi Shot
  • Strafe
  • Lightning Strike
  • Chain Lightning
  • Nova
  • Frost Nova
  • Poison Nova
  • Shock Wave
  • Fist of Heavens (Holy Bolts)
  • Wake of Fire
  • Claws of Thunder (only 2nd and 3rd charge charges have Next Delay. 1st charge does not trigger Next Delay)
  • Phoenix Strike (only 2nd Chain Lightning and 3rd Chaos Orb charge have Next Delay. 1st charge does not trigger Next Delay)
  • Dragon Flight
  • Battle Cry
  • Battle Command
  • Battle Orders
  • Any other piercing missiles


2 sorcs are questing along and they encounter a monster. They both cast Chain Lightning targeting the same monster, but one player has a slightly faster reaction/casting speed/whatever than the other, so his CL hits the monster first. The first CL to hit starts the NextDelay timer, which lasts for 4 frames (0.16 seconds). The second, slower sorcs, ChainLightning will automatically miss if it "hits" the monster within the 0.16 seconds of the first CL. If the NextDelay from the first CL has already run out when the second CL "hits", the monster will also receive the damage from the second spell (and reset the NextDelay timer again).

A Wind Druid is spamming Twister at some Frenzytaurs. He is quite well equipped and hits the 11 fpc breakpoint. Thus he can hit a monster at least two times a second. The Frenzytaur in lead gets hit by the first Twister, and even the second Twister cast 11 frames later hits him. Since he is still under the influence of the NextDelay timer from the first Twister, which lasts 25 frames, he will only take damage from the first Twister. The damage from the second one will not be applied.


The information about NextDelay is taken from the Assassin FAQ.
The first example is sirpoopsalot's from the Sorceress FAQ.homework help online