This building doesnt feed any gold so it is good to use for blocks than gold mines , but limit only 10 . and it simply not tough , 10k hp.
We stack back wall with blood box then we build it to prevent v3 + blink and hold shades power awhile longer and slay all of it with rocket towers .
We use it to trick vampires while planning to slay vampire with fairie wall lvl 6 and tower?
Or ever use on unexpected blocks or base covering.
Tt also good use on anti claw of dreadlord.
Or even block kills we learn later or even trap a vampire with fake blood box that he is dying then add towers to end ............