It is one of the most beautiful cards for any serious collector
It comes from the final main expansion in the Sun and Moon Series that is no longer in production, and has a very low pull rate, which makes it one of the rarest, most valuable, and most expensive Sun and Moon cards
When you buy a mystery box, you're making a bet
The last is the Artifact status, and cards like Tinker and Goblin Welder have been huge allies for the card, helping to drop it very early
If I had to pick my personal favorite of this list, Id probably go with Nekusar, the Mindrazer, because Ive played against it several times and it was always a ton of fun, even if it undeniably kicked my butt