Part 1: The Mother Spore

Mycelium's Grace
(Hermitcraft season 7)
To help the Mycelium Resistance, Grian was experimenting, trying to make the mycelium spread faster. The result... not what he was expecting.
Now can he keep this Sentient 5-year old like mycelium being out of the Mayoral party's reach?
Can he and the other Mycelium resistance members handle a 5 year old?
And will mumbo get his beloved vault?