I wasn’t sure what to say at the time, and it seems it didn’t win. However, even though there are some clear top tier decks, after the rotation, the possibilities for what decks are viable seem much more varied now. So I wouldn’t rule out anything being able to do well! (Then again, if this was expanded, I’m unsure what all is doing well with that format.)
The problem with Greninja's attack is that you often will not knock out a GX with it, because your opponent's lowest remaining HP Pokemon usually ends up being a Non-GX anyways. And on most situations you could KO a GX with the move, the victim would be damaged enough that most decent attackers could knock it out anyways with lesser effort.
Also, there is something vague about the wording: Do we have to choose the lowest remaining HP between all Pokemon in play, excluding itself, regardless of which side they are on? If so, then if a 70 HP Froakie on your bench had the lowest HP of your side, and lower HP than any of your opponent's Pokemon, your opponent would be safe from the attack, as that poor frog would become the victim of the move instead.
you technically dont even need damage counters, just choose any lowest hp pokemon and knock it out. since you can choose yours or your opponent, will it even work if the opponent has 1 pokemonWow that’s incredibly strong, good lord. I’d honestly run 1-2 of him in expanded since there are enough ways to spread damage counters
Sorry, but Naganadel lets both player's prizes down to 3, Raichu needs you 3 prizes behind in order to accel nrg.