Spirit Of The Forest

Spirit Of The Forest is a Quest Reward from Everturn Forest, so it is earned through gameplay rather than bought. The wiki says its power grows massively as the seasons "remember you", which suggests a rod tied to the forest's seasonal cycle, although the entry gives no numbers for that growth.

What the listing does show is its starting stat line, and it is modest. 70 Luck ranks 138th of 184 obtainable rods, Lure Speed of 40 ranks 146th, Control of -0.02 ranks 165th of 185 and Resilience of 10 ranks 129th. There is no passive, no weight limit and no price. On those figures alone, it sits in the lower third of the field.

That makes the decision depend entirely on the seasonal growth. If it truly improves over time, it is a rod to keep and reuse; if you judge it on today's numbers, you can find better. The only other rod listed for Everturn Forest is Splitbranch Twig.

My take: do the quest if you are already in the forest and want a free rod to grow into. Do not expect it to carry you through rare-fish hunting at its starting values.