I have one T5 and T6 world that is open to the public for farming mats.
Fantasia - TNT Shedu Teir
Bastian (spelled Bastion on the sign) - TNT Serp (nope, can’t spell it, lol)
Please be sure to regen your area before you leave out of courtesy for myself and others.
Thanks!
~ PixelatedTwix aka LunaShaele