"There Can Be Only One" Rating Score by みめっと

This is the reverse version of "Rivalry of Warlords" and you can only put out one monster of the same type.
In general, it is a highly binding permanent meta trap that has more decks that pierce than Rivalry of Warlords . If you don't have a deck that can bring out large monsters even without it, you can lose unilaterally without being able to put out monsters properly from extras.
He can be used in multi-species decks such as Fur Hire and T.G.
Like Rivalry of Warlords , it's strong even if you put it out later, so it's a powerful card that you'll want to have on your side if it's possible to mount it in your Deck, as it has a characteristic that distinguishes it from many other permanent meta traps. .
By the way, if it is activated at the same time as Rivalry of Warlords, the two effects will be mixed, and as a result, only one face-up monster can exist on the field.
If you have a special build where, for example, you only have one type of border monster to play as a hitter, and the rest are all triggered monsters, you can use both at the same time.
In addition, I think that the combination of 《Thunder King Rai-Oh》& Azrun can also be used as a gozen sensor.