Traits

Opal s a blessing granted by the Guardian Groudon and is able to be fused onto a pokemon or a trainer provided they have a remaining fusion slot available out of their 2 maximum. 

Rules: 

Must be shades of blue, pink, and purple. It can have a splotchy texture or be smooth. Can show 'stars' but cannot have cloud-like markings.
Areas affected will have a smooth glass-like feel to them. This cannot be transparent to show 'bones'. 
Can cover 50% of the body!