That's exactly right. It can be cast on allies to help them run/chase if you need it, but it's mostly meant to catch an enemy who is moving in towards your team and force them to overextend. The duration HAS to be short or else they would be able to correct themselves and use the speed boost to back out. The way it is now they're moving in, suddenly they run themselves into the middle of your team, and then they're slowed. Could be hard to actually catch someone at the right moment to do...
Posted: Jun 22, 2016