If you can play it on turn two, it gives you some nice size in the early game, but it maintains very real relevance into the late game thanks to its ability to draw you card AND to turn into a full-on wereowlf
These cards have a 25% chance of being opened in the marketing card slot in Set Boosters, and 12.5% of the time in Play Boosters
Mewtwo has unmatched collector staying power (Kanto original, anime icon, Pokemon GO raid boss, 30th anniversary headliner), which is why this card has held above $80 for most of 2024 and 2025 despite broader S10B price movement
Usually, the onus is on stats such as attack and speed, but the HP of a Pokemon is also quite important
This is closer to a "quality of life" ban than a power level ban
You want to extract as much value as you can out of each face-down creature you manifest