i'm betting we won't get any powers from the clock tower until we're sufficiently trained to harness the POWER OF TIME
you do get things from sub-towers/dungeons: +5 HP limit and; yes, powers, but there's only 2 for caster and buster, and they're not specified under defe. or offe.
The Clockbyte jumps up and sends out 3 hands of time!

David, Chicago, and Johnny are frozen in time!
