The amount of advantage gained from this card is ridiculous even if some of the effects miss their marks, and once the kind of deck that plays this card gets that kind of edge it does not give it back
I've used an English Masticore for the example because that's the only card I have here, but I've checked it works with non-English cards too
A front-loading system that's so easy to use, you'll be swapping out cards faster than a Pikachu's Thunderbolt
Basically, while this tier list is focused on wildcard spending, it also applies to the limited event
The monster's Attack and Defence increase when there are monsters on the field with the following attributes: Fire: ATK and DEF are increased by x1000 Dark: ATK and DEF are doubled
Dark Room of Nightmare X SPELL Continuous Each time your opponent takes damage from a card effect, except "Dark Room of Nightmare", inflict 300 damage to your opponent