mega symphonia booster box japanese (M1S) when all EX cards were basic Pokémon Mega Symphonia M1S Booster
Description
That's mainly down to the one-energy move Leech Life, as it heals the Pokmon the same amount of damage it does to an opponent's Pokmon

But if it's strategy and silly fun you're after, it's not a bad choice
Besides, having a couple effects to keep players honest rarely hurts
However, there are a few monsters with stats that deviate from this, such as Castle of Dark Illusions with 920 ATK and 1930 DEF or Dark Chimera with 1610 ATK and 1460 DEF
