Becuase Extreme speed says it hits before any move does it count other priority like sucker punch, Fake out, and Ice shard. And would it hit before a faster priority user like if Lucario used Extreme speed and Swellow used Quick attack who would hit first.
Pleaselog inorregisterto add a comment.
Yes, Extreme-Speed will go before any move that has a lower Speed Priority like Ice Shard. But it will not go before any move because there are moves with a higher Speed Priority. Here are moves that will go before Extreme-Speed:
Helping-HandEndureFake OutMagic CoatDetectSnatch
There is a lot more so I also gave a list here:http://serebii.net/games/speedpriority.shtml
Extreme-Speed will go before Quick Attack if both used in Battle..