In a format as sensitive to card advantage as multiplayer, this is quite bad
SP SP stands for Special Pokmon, and these cards are particularly popular amongst collectors
Ancient and Future Pokmon continue to be dominant in the Pokmon Trading Card Game and I'm guessing that Trainer's Pokmon will have a similar impact
And the mid-tier is following: a Groudon Gold Star PSA 10 brought $27,000 this year
If you have ten creatures, all your creatures get +10/+10, which in most cases will outclass practically everything your opponents play
Of note: If you cast a Fact or Fiction with an opposing spell on the stack, you may be able to fool your opponent into splitting the piles in such a way that they put the Force of Negation or other counterspell in the two-card pile, thinking that you may feel compelled to take the smaller pile in order to counter their spell