So, for example, the basic Charmander evolves into Charmeleon, who evolves into Charizard
Trading Card Game Tournament Policy Speed Duel Addendum" (PDF)

Sort Card Type Slaking #12Holo Rare $19.50 Slaking #15Holo Rare $3.50 Slaking #13Holo Rare $6.94 Slaking #34Rare $1.00 Slaking #16Holo Rare $4.65 Slaking #103Holo Rare $1.56 Slaking #83Holo Rare $0.57 Slaking #115Holo Rare $5.85 Slaking #18Rare $1.19 Slaking #170Holo Rare $0.58 Slaking #131Holo Rare $0.20 Slaking #162Rare $0.16 Slaking #62Rare $0.39 Slaking #52Rare $1.03 Slaking #76Rare $0.29 Slaking #24Common $1.44 Slaking #51Rare $2.50 Slaking #78Rare Slaking (Cosmos Holo) #162Rare $0.20 Slaking ex - 084/106 #84Double Rare $0.31 Slaking ex - 126/106 #126Super Rare $1.06 Slaking ex - 147/191 #147Double Rare $0.65 Slaking ex - 227/191 #227Ultra Rare $0.98 Slaking V #58Ultra Rare $0.71 Slaking V - 059/071 #59Double Rare $0.42 Slaking V - 079/071 #79Super Rare $1.71 Slaking V - 2023 (Gabriel Fernandez) #58Ultra Rare $1.19 Slaking V (Full Art) #77Ultra Rare $1.56 Slaking #12Holo Rare $19.50 Slaking #13Holo Rare $6.94 Slaking #115Holo Rare $5.85 Slaking #16Holo Rare $4.65 Slaking #15Holo Rare $3.50 Slaking #51Rare $2.50 Slaking V - 079/071 #79Super Rare $1.71 Slaking #103Holo Rare $1.56 Slaking V (Full Art) #77Ultra Rare $1.56 Slaking #24Common $1.44

Typically, holo cards only have a holographic art image whereas a reverse holo card will have holographic foiling on the rest of the card while the artwork is not holographic
This guy is truly the king of targeting and destroying cards on the field
Its too dark and busy for my liking, but it seems that Pokmon fans arent in agreement, given its placement on the list of the most valuable Japanese Pokmon cards