The first edition base set had a limited print, which contributes to its worth nearly two decades later
Mandate of Abaddon, is a four mana board wipe that lets your biggest creature stay alive
So as a whole, I would say its obviously very good for Japan, but more than anything, its just trying to lean into the authenticity of what it represents to that market what the history is with respect to video gaming culture in that region, and making our players globally excited.
The stat-line is rough, but it helps you load your graveyard for Black-Green and Blue-Black, and it can trade for anything
The physical Pokemon TCG has a rich and storied history when it comes to including the oddly pigmented monsters on the cards
Short answer: you can't just by looking at the card in isolation