The fact that this 🔥 effect can also activate during your Battle Phase makes it impossible for you to beat it with a beater.
Unless you can get rid of this thing by banishing it, you’re pretty much 🔥ed because after beating one of them, they’ll just summon another
and what's the problem to set Fortress?
you have a 50% chance of getting at least one in your starting hand
it's like, you know, you will lose with a great chance any duel without a fortress anyway