Yggdrasil, the Norse World Tree

First things first: Thanks @Lularthiel for the tip and the lorA that made this creation possible!

About Yggdrasil: According to the legends, Yggdrasil is a gargantuan living ash tree with branches extending above the heavens and a trunk strongly latched into the ground by three great roots. Here, the gods assemble and meet, seek sustenance from its life-giving branches, and watch over the worlds. Radiating from this center span the nine realms of existence, including Asgard, the home of the gods and the hall of Valhalla, and Midgard, the land of the human mortals. An anonymous eagle sits in the top of its branches in constant conflict with an evil serpent, Nidhogg, who tries to unbalance the tree by chewing through one of its roots.