Its main function is to serve as ramp in human decks or when you need an extra mana dork in singleton formats
Bulbasaur Caterpie / Metapod / Butterfree Charmander Charmander / Charmeleon / Charizard Ekans / Koffing / Weezing / Meowth / Persian / Arbok Graveler / Geodude / Golem Meowth Nidoran / Voltorb / Venonat / Vulpix / Jolteon / Machop Onyx / Cubone / Eevee / Zubat / Farfetchd / Clefairy Pidgey / Poliwag / Sandshrew / Jigglypuff / Bellsprout / Rattata Pikachu Arms Up Pikachu Sitting Raichu / Pikachu / Pikachu Scyther / Snorlax / Mankey / Clefairy / Lapras / Gloom Squirtle Squirtle / Wartortle / Blastoise Staryu / Seel / Psyduck / Tentacool / Tentacruel / Starmie Venusaur / Bulbasaur / Ivysaur Blockbuster Promo Card Checklist 1 card
The artwork, illustrated by Arita, features the character with a wide grin as he holds a trophy against a silver background
On closer inspection, you can see that the skeleton isn't even a real skeleton, but likely to be an artifact creature of some sort with all the magical runes and/or mechanical circuitry on the skull
Instead, they have flavor text
If youre not familiar with them, they have a fairly large trading card games auction coming up in March 2022 that might give you a good idea of how things work at Heritage