"Giant Starfall" Rating Score by ねこーら

Comprehensive evaluation: Will it be the main one to use on your own turn?
Considering that it will be used on the opponent's turn, Titanocider can be used to seal the effect and set his ATK to 0 to disable him, and it can also be used against monsters with levels.
In the case of this card, it cannot be chained, so if you use 《Divine Arsenal AA-ZEUS - Sky Thunder》etc. before using the effect on your turn, you can disable it without being removed by the effect.
In addition, since it has battle destruction resistance, if you use something like Mathmech Nabla that can only attack monsters twice, you can offset the damage reduction by half, and it might be worth considering.
If you use it against your own monsters, his ATK will be 0, but his battles damage will be halved, and there is a possibility that he will survive without being destroyed in battle, so it can't be used as a defense.
If he turns into a wall on the opponent's turn, he may be hit by a monster with a high ATK, but there is a possibility that the damage will be suppressed compared to the case where the first one is destroyed in battle and the rest are attacked directly.
In addition, it is possible to use it on his own Xyz Monster on his turn to use it for a suicide attack, and in the main 2, he can use 《Divine Arsenal AA-ZEUS - Sky Thunder》repeatedly, but it is a pretty emergency evacuation move Kana.