Million-Century Ice Prison →Used Deck

The conditions are strict, passive, and the effect itself is weak.
When used during the opponent's turn, it can be said to be an effect that may force the battle phase into the battle phase with a half-finished development, but since the development can be continued in the main phase 2, the interference performance is simply low. is.
If hand triggers become inflated, the activation condition may not matter, but the effect is weak after all, so the future seems to be low.
Combined with 《Terminal World》, you can skip both main phases 1 and 2, so you may be able to play romantically.

The turn skip and effect have an impact, but the strength of the opponent's dependence stands out even from the activation conditions.
I think it is possible to delay the attack, but it is easy to be influenced by the situation of the opponent whether it can affect the development.
As already said, Threatening Roar and reconciliation are easier to handle if it's just to surpass the attacker.
At the very least, I would like to use it together with a card that is strong against destruction like Stada. Since it's a Quick-Play Spell, it can be used on your own turn, and it may not be possible to use it against Nibiru.
I think it's a difficult piece to handle.

It can be activated on the condition that a monster on your field leaves the field during each player's main phase due to the effect of the opponent's monster other than being destroyed, and has the effect of ending that main phase or skipping main phase 1 of the opponent's next turn. Quick-Play Spells.
In most cases, this effect will be activated during the opponent's turn, and when the opponent is about to remove their monsters with an effect with high resistance penetration, by ending Main Phase 1, you will be able to stop this further before the Battle Phase. You can prevent the field from being destroyed or deployed.
Also, if the opponent does this during your turn due to a monster's triggered instant effect, etc., you can skip the opponent's main phase 1 to prevent it from being deployed before the battle phase.
However, the activation conditions are completely dependent on the opponent, and since it is limited to monster effects and does not include destroying effects, its versatility is low. There is no change in the fact that it will be done.
Even if you use it normally, there are times when it's just a delayed card with troublesome activation conditions, and if the only difference between main 1 and 2 is to be deployed and you have to die that turn, it's OK to use 《Thunder of Ruler》or 《Threatening Roar》.》is enough, so if you use this card, you can combine it with other effects that allow you to skip the battle phase, or because it is a Quick-Play Spell, Nibiru is used when you go first, and you end up passing the turn with a half-baked board. I would like to pay attention to preventing instant death from counterattacks even when it is full.