Cels - the perfect motivation!

Cels, besides looking pretty and making you feel all mushy inside, now have a new use! Getting you to do something ;D I've decided that in order to reach a certain goal, my reward for sticking with it will be an extra special cel. Until I reach said goal, someone will hold onto or take away said cel if I don't pull through. A bit depressing, but wouldn't you work hard if you knew you were getting something you desire?