Hard to predict and even harder to play against, Embercleave was an absolute nightmare in Standard
If you happen to pay ten or more mana into Finale of Devastation, you get to give all creatures you control +X/+X for the turn, while also giving them haste, letting you attack with whatever creature you just tutored for
Like most Pokmon cards, the value of Mew depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Unbroken Bonds)
Many decks can run the same count of Supporter cards and still function strongly, so keep these cards in mind if you need some support
Back in the day, you could play against your friends using the Game Boy link cable