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Decided to try, just for fun, to complete the Deeply Inundated Dungeon battle using only one fake and without a blessing (against 6 swordsmen). I found a looping tactic, but after the back-and-forth chase begins, around rounds 6-7, the loop starts to break down, and in several patterns. If one pattern can be bypassed with an additional wait, the next one cannot be bypassed:( Further, in theory, you can try to loop again, but that's a different story.
Looping with 9 fakes in 1 stack.
well, then :) the simplest advice: if the first rounds of the loop go without changes, then you don't need to kill the swordsman; leave him with exactly enough health for one hit, and then attack the next one. And when the entire group has only enough health for one hit left, start reducing their health. How does that sound?
The principle here is: don't fix what isn't broken :)
although, if all the swordsmen are defeated, what's the problem?