"Diabolos, King of the Abyss" Rating Score by カンノーネ

Although the release material is bound to his DARK, it does not have the release reduction effect that tends to be found in release material binding.
Unlike Monarch, Tribute Summon doesn't trigger the effect, so you don't have to use Tribute Summon, but you can't revive him from GY or P summon with Fergra support.
《The Prime Monarch》can't be used as release material, Eidos can be used but Idea can't be used as release material, and 《The Monarchs Stormforth》can't be used as release material for opponent's monster.
It cannot be said that the draw operation effect is strong at all. What's not good is that the big problem is that you can't control the next card you draw even if you remove one card.
This person is full of flaws, but the only problem that can be solved is the draw operation effect, and if it is a 《Convulsion of Nature》Deck, the Deck is flipped over, so only you can check which cards to draw before your opponent draws. You can see the card that you plan to draw next when you're playing, so you know that if you don't draw this, that will be drawn. 《Convulsion of Nature》I can't afford to have this in my deck!
Since it is the highest Monarch status, it corresponds to the level-down effect of 《Tenacity of the Monarchs》and 《Domain of the True Monarchs》.