If its heads, the Pokmon wakes up, if its tails, the Pokmon remains Asleep
Considering Magic: the Gathering game players start with 20 points, it's daunting to face a creature with 15 attack and 15 defense
Its actually not a terribly far-fetched concept though
It doesn't stop damage, but it's one more layer to the V Union card's metaphorical armor
In the books, it's heavily implied that Tom and Goldberry are supernatural, otherworldly creatures that could absolutely wreck shop if they ever stopped getting distracted by singing funny songs and generally having a nice time at home
Apart from a pretty gnarly artwork design that sees Greninja at the center of what looks like a barage of paint, Greninja ex has some pretty strong attacks