A nice cheat with the potion of clarity. The potion provides a boost to XP. What one individual being would provide the most benefit to the settlement? The Quickening, that is who! Richter has already missed a few finishing quests for the tree (fruit and pixies), but it not too late. Pore the potion on the tree roots everyday to help it gain daily XP. though it will not be a vast amount, the tree should level 25% quicker than normal. That isabella elf better also be using her spell to also increase the growth rate of the tree (if it can).