Some quick and dirty ideas for you
A magically treated tunnel that prevents dimensional travel, among other mean qualities, etc....
SA: Horn: As a swift action, Thomas may toot its horn. Fort save vs. deafness. 30-60ft radius. 1 minute duration. 1d4 round recharge.
SA: Incessant Chatter: As a swift action, Thomas babbles incessantly, driving any older than childhood age to madness. Will save vs. madness/confusion. 30-60ft radius. 1 minute duration. 1d4 round recharge.
SA: Steam Shower: As a standard action, Thomas ejects a cone of steam causing xd6 damage. Reflex save. 1d4 round recharge.