Thieving Skydiver can easily steal an opponent's Stonecoil Serpent for a mere 3 mana, though you will still need to pay 1 mana for the kicker effect, even if Serpent Coil technically costs 0 mana
Also some English cards are printed in Japan

Surge's Raichu #11Holo Rare $76.06 Raichu #14Holo Rare $71.07 Raichu #27Rare $5.73 Raichu #56Uncommon $0.20 Raichu #14Holo Rare $112.11 Raichu #16Holo Rare $55.92 Raichu #21Rare $16.46 Raichu #13Rare $14.51 Raichu #12Holo Rare $22.52 Raichu #51Uncommon $3.60 Raichu #12Holo Rare $31.39 Raichu #15Holo Rare $19.65 Raichu #45Uncommon $2.49 Raichu #8Holo Rare $28.01 Raichu #3Rare $11.54 Raichu #77Uncommon $3.24 Raichu #10Holo Rare $32.36 Raichu #33Uncommon $5.99 Raichu #40Uncommon $2.91 Raichu #43Holo Rare $2.90 Raichu #28Uncommon $1.42 Raichu #49Rare $1.10 Raichu #27Holo Rare $2.19 Raichu #RC9Common $16.23 Raichu #36Holo Rare $8.29 Raichu #41Holo Rare $1.29 Raichu #55Rare $0.60 Raichu #67Rare $0.94 Raichu #66Rare $0.37 Raichu #50Holo Rare $0.41 Raichu #53Rare $0.27 Raichu #50Uncommon $0.17 Raichu #26Rare $0.31 Raichu #9Classic Collection $5.80 Raichu #52Common $0.22 Raichu #24Common $0.20 Raichu #26Rare $0.23 Raichu #25Uncommon $0.27 Raichu #15Uncommon $0.23 Raichu #27Rare $0.29 Raichu #17Uncommon $0.68 Raichu #15Uncommon $1.30 Raichu #29None $4.00 Raichu #14Rare $4.97 Shining Raichu #111Secret Rare $595.00 Raichu & Alolan Raichu GX (Alternate Full Art) #221Ultra Rare $334.64 Raichu ex #98Ultra Rare $267.89 Raichu (H25) #H25Holo Rare $252.10 Raichu & Alolan Raichu GX - 057/054 #57Super Rare $249.99 Raichu (25) #25Holo Rare $174.99 Alolan Raichu - SM72 (Prerelease) [Staff] #SM72Promo $172.49 Raichu & Alolan Raichu GX (Secret) #241Secret Rare $136.84 Raichu ex #97Ultra Rare $130.00 Raichu (Prime) #83Ultra Rare $123.39

While Invasion of Regatha has some interesting uses, for the most part, there are other cards that do the same thing but better (Stoke the Flames for the front and Solphim, Mayhem Dominus or Urabrask for the back), which puts the battle in C-tier
Due to the differences in the cutting process, the backs of JP prints almost always have a thin white border around the black border
The deck also runs some of the most efficient removals in red and white