Red's Full Dev Set.-awesome chinese house-Just obtained it after I killed Skeletron Prime in my Expert world for the first time.
so they started work on 1.3.1
source???
I'm pretty sure they only grow in hardmodeMedusas can't petrify you if their animation is interrupted, so you just have to deal constant damage when one appears and it'll die without causing much damage.
that box might not be big enough, as it needs to turn into an underground hallow biomelooks like you got the underground part right though, my friend tried to put a farm near the surface