This is due to its high HP of 90 and its ability to (potentially) heal 30 HP each turn, making it a strong early-game card that is very likely to evolve into its powerful Skeleridge ex form
Heres what each of them does
It is a Pokmon Tool card illustrated by Ryo Ueda
That said, a clear smartphone photo taken in good lighting usually works well
Honestly the uncounterable here feels backbreaking, but I guess thats what you get for eight mana these days
The stock list is filled with all these cute little synergies which add depth and complexity to the list -- cast two spells per turn, legendary creatures matter, tokens matter -- but Y'shtola is very clear on what she wants to be doing, and that's chaining together high mv noncreature spells, and this deck simply refuses to do that