I like the cycle of spark cards you made. I'm not sure if they are too powerful or not, but It seems like they were well made. I think you put these on a lower level to keep them from being too strong, and that's not a bad thing. I would like to try these out if I had enough PW's to build a deck.
Thanks, I have spent some time thinking about this cycle and how to balance it. I didn't make them overpowered or give them +2, because some planeswalkers have a low costed ultimate loyalty ability, a +2 ability would make them too good.