Tier 7 waterworks and 5 little fungarians one hit tank brann , then one hit me.
Which means the delve is written to be impossible.
Which means I ignore content with bullcrap mechanics.
So I don’t do delves anymore.

I stopped doing pet battles on timeless isles , because it was impossible
I stopped doing brawlers guild because it was impossible.
I can probably think of more stuff I dropped for being impossible. but not at the moment.
if the intent was to deny me delves by making them impossible, you succeeded, I quit.
Downloading Hello Kitty game now.