Keldeo ex

This seems like an inevitable smash hit to me. Yuu Nishida’s Keldeo is a stunningly beautiful card, and so gloriously colorful. And look at the detail! Look at that two-stage waterfall in the background, the water ripples around Keldeo’s hooves, the god rays coming from the trees.
It helps that that two-energy first attack, the 30+ one, is in fact 30+90 if you played it from the bench that turn, and then Sonic Edge will do another 120 every turn after that.