These talents that cultivators of the third mortal coil gain from their foundation after advancing are one of the reasons why they were not allowed to compete for the inheritance of Daoist Blood Pill in the secret realm.
Their talents grant them an extra advantage, which those at the second mortal coil didn't have. Plus they had extra energy storage, so they are considered cheating.
He doesn't have the ability to transform himself into another creature, but he is not lacking in talents because not only does he benefit from both the Everlasting Wood Art and the Divine Lightning Armament, but he also gained a new source of benefits from the Life and Death Lightning Art.
The talent from the Everlasting Wood Art is the plant affinity and communication ability. This ability is similar to Thor's ability to communicate with metal. They are both talents that allow them to use mana to communicate with animate and even inanimate things.