Major League of Legends Ability Reaction Windows
Effective reaction windows for key ultimate and crowd control abilities:
| Champion & Ability | Cast / Travel Time | Audio / Visual Cue | Human Reaction Difficulty |
|---|---|---|---|
| Malphite R (Unstoppable Force) | 325–540 ms | Ground impact roar + airborne dash | Moderate to Hard at close range |
| Amumu R (Curse of the Sad Mummy) | 250 ms (Cast time) | Bandage spread animation | Extremely Hard without pre-cast read |
| Ashe R (Enchanted Crystal Arrow) | 600–2500 ms | Global ice shrieking audio cue | Easy at range; Hard point-blank |
| Blitzcrank Q (Rocket Grab) | 380–500 ms | Arm extension steam release | Moderate side-step window |