"Mystic Mine" Rating Score by シエスタ

A card that powerfully seals monsters against those with a large number of monsters.
Although it is easy to depend on the opponent's field, it is easy to solve with construction and playing, and above all, it is easy to search for this kind of lock card because it is a field.
In the current environment where monster effects are often the main force, naturally this influence is tremendous.
Decks that don't use monsters as their main force can of course be operated without much of an impact, so it's easy to move such decks smoothly, and you can expect pseudo-support. Of course, if the opponent doesn't put out a monster, the effect won't work, so it's suitable for attacking second. Due to its characteristics compared to other fields, Metaba and Demise of the Land are better suited for surprise searches than Terrafo.
There's no reason why it can't be used as a single-use meta card.
It has not only a strong effect but also good handling. The ability to make his deck centered on this.
Since there are places where the way to win is delayed or poked holes in the rules, I think it will definitely be regulated. If it is unofficial, it may be prohibited. It's a troublesome card in a different way from an infinite loop. Bad words are harmful.