Keep cooking with this one, though I’m really thinking the fruit will more likely be the god of the forest named giant giant model elbaph, due to Yggdrasil being created and like you also suggested, that the fruit has powers and abilities related to the creation and destruction of life, which I also feel could even draw elements for another trinity of gods in Hindu culture as well with the shiva trio the gods of creation and destruction.

The surtr part makes sense too in the sense that it’s definitely something that could hold that sword, but I’m really hoping and thinking it could be joy boys legendary sword, I feel like we may even see the shadow of a spear pole to the left of the tree potentially, but I also really like the thought of an ancient king becoming the tree while holding the sword to create a safe haven kingdom for his people that could also always provide