If a player is getting too far ahead and controls Xantcha, other players can scheme to use their mana to knock the leader down a few notches
In previous years, Id dismiss this kind of card, as the time and mana it took to cast it was less meaningful in games that regularly went over 10 turns, and with decks that drew far fewer cards, on average
With multiple Greninja BREAKs on the board and some energy in your hand (Fisherman, anyone?), you can do some serious damage to your opponents Pokemon to take some easy prizes, and thats before you even attack
Still, that's a small gripe when this deck is as strong as it truly is
Just like that card, the end-of-turn blinking is a great way to accrue value by blinking permanents with strong enters triggers