Oops. Forgot to post in here.
The session was a pretty good one, but we only had 3 players show up. I changed Ariel from male to female, by the way, due to the miniature I was using for him/her.
Ariel started off by summoning three waterspouts and conjuring her zone. The PCs managed to get their raft out of the zone, but then abandoned it in favor of using otters as mounts.
This resulted in some fairly cool maneuvers, including going UNDER obstacles and opponents, and using the otters' large size to keep combat advantage against their targets.
When Ariel was bloodied, she snapped out of the trance Kalbon put her in, and since the PCs were having some trouble with the waterspouts, she joined the PCs in defeating them.