A tree, but not a tree. A plant, that "guides," that "protects." It makes her think of the Thorian. The Thorian Shiala had known had been apparently one of a kind, perhaps the last of its species, unless others grew on other far planets.

If she had hackles to raise, they would; as it is, her eyes narrow a little.

"You say it guides you." If this Yggdrasil is at all like the Thorian, well, Shiala is a very unique position to determine that. "Guiding," to her, suggests the sort of spore-driven control the Thorian had over its thralls. "What would happen if your wishes were... contrary to Yggdrasil's?"