Earlier today while looking through my collection i came across some very odd cards. I found a Frogadier (Breakthrough artwork), a swanna (Breakpoint artwork), and a Seaking (breakthrough artwork). Now, what confuses me is the fact the all these cards have a set symbol the resembles a suicune outline in white. Even more confusing is the fact that the set is out of 30 seaking being 12/30 frogadier being 6/30 and swanna being 18/30 can someone please help me because I'm very confuses, is this a side set, did it come in a deck, or is it a mistake?
