Elder Pigu took out a scroll from his spatial storage tool and opened it on the table.
"Like I said there are three such sentient spirit herbs that we know of right now. We don't know what their strength is though, and that will be a potential point of caution for you.
For Brother Lin Mu, I reckon something at the Shell Expansion stage of Dao shell realm will be manageable, but I doubt you would want something at the Dao Treading realm." Elder Pigu spoke.
"Indeed. I would like to avoid that." Lin Mu nodded his head. "Though are there really such spirit herbs there in the forest?" he asked.
"There are yes. The most famous one in recent times was a Two faced Poplar that is now reared by the Rainbow pill sect. It has the strength equivalent to that of a Dao Treading realm cultivator.
This was obtained by the Rainbow Pill sect about six hundred years ago, so its current strength has probably increased." Elder Pigu spoke.