As previously said, the rank of the Lord Immortal Tiger Diety's 7th Managing Fairy Maiden was not low and was a few levels higher than Lord Shing Wong.
Just the fact that the stone card's quality jumped from normal to rare signified that the Ming Lun Envoy was not a normal Land God anymore after becoming a Fairy Maiden.
Moreover, this was only the effect of the proof!
Just think about it. There was a saying that tigers can absorb souls. This was the origin of the name Tiger Deity.
Wei Xiao Bei felt that using the second effect of the proof would allow him to repel the curse of the Pencil Spirit and the Dish Spirit.
As for the first effect, Wei Xiao Bei still needed to take it into consideration. After all, a small amount of power from the Tiger Deity appeared to be not bad, but after using it, the Stone Card might not be usable anymore.