Forum:Star light, star bright confusion

I'm on devpro. i have yubel and level eater, both face up, on my side of the field. i try to activate star light, star bright to make them both level 9 or 10. it won't let me activate it though. nothing's preventing me from doing so. can anyone tell me what the problem is? thanks. 24.138.143.39 (talk) 15:20, April 17, 2013 (UTC)