Many collectors tend to get confused between full art Pokmon cards and alternative art Pokmon cards, and the difference is quite easy to navigate if you look at the rarity symbol in the bottom left of your card
Its attack, Coruscating Quartz, deals 200 damage for three Energy in Fire, Water, and Lightning
Like most Pokmon cards, the value of Entei 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 (Neo Revelation)
Gyarados ex's Rampaging Whirlpool deals 140 damage and only costs 3 Water Energy and 1 Colorless Energy
But if the developers eventually come up with the wild idea of introducing the Lost Zone in Pokmon TCG Pocket, it may become a game-breaking feature that requires lots of adjustments for many players
(3/19/2021) Tarmogoyf counts card types, not cards