How do I make a spell that makes the player faster for 5 seconds?

[Et3rniti]

I don't mean in-battle, since I'm using Falcao's ABS (takes place in the overworld) rather than the default battle system. I know it would be with a script in a common event or something, but I don't know how to do it. I don't want the numbers of the timer on screen, either. Help?

 

[Shaz]

Attach the skill to a common event. In the common event, do a Set Move Route on the player, with the commands Change Speed (to 5), Wait 5 seconds (300 frames), Change Speed (to 4).