Holy Cow! Plant Growth is crazy, I don't think useful here, but wow. ( All plants within a mile produce at a higher rate - for farming)
Rom'Pi will use nature's rampart on our little fortresses. I can only do it 2 times a day, so a total of 80' of rampart.
Move Earth is 6th level, and Rom'Pi is flattered you would even think of him and spells of such power.