"Lord of the Heavenly Prison" Rating Score by みめっと

Following Nibiru, another large general-purpose monster has appeared in Rock in the main deck.
First, by keeping yourself revealed from your hand until the end of your opponent's turn, you can protect set cards, including face-down Defense Position monsters, from effect destruction.
If you attack first, the opponent's counterattacks such as Nagisa and Laith will become threats. is a very valuable effect for the Trap Deck.
Once opened, it can be destroyed normally, so compatibility with permanent figurines is a delicate place, but I am grateful that the effect is also effective for cards set after release.
Furthermore, when his set Spell Trap, including that of the opponent, is activated, it will have the effect of self-SSing himself from the hand, and if he self-SSs from the open state, he can further set his Spell Trap from the Deck. It exerts a disproportionate effect.
However, either of the two effects is turn 1, and if you reveal it with your own effect on your turn, you can only SS on your opponent's return turn = Normal Spell and Continuous Spell, as well as Quick-Play Spell set from the Deck. Since it is the turn in which the and Trap cards are set, they cannot be used until the turn returns. It also has the disadvantage that it is not suitable for permanent or field summoning unless you have an impregnable wall.
Even so, keep protecting set cards from face-down removal by just showing them from your hand every turn. Given that Spell Trap can also be played from the Deck, there's no doubt about its versatility.