Edward, Wayward Wanderer

Whenever you cast a white spell, if Edward does
not have a White Chroma Counter, put a White
Chroma Counter on Edward. Do the same for
Blue, Black, Red and Green. Whenever Edward
has a Chroma Counter of each color, remove
those counters and transform him.
"I thought it was just a wild fox digging in the trash,
not a Void creature asking for help. We need to report
this to the Captain."— Julian'ous Wildcall