World Tree YGGDRASIL

World Tree YGGDRASIL is a tree that has its own backstory and lore set for why players ventured through different worlds of YGGDRASIL.

Appearance
It is a tree that sprouted over countless leaves, ranging from more than two hundreds of it overall.

Background
The World Tree YGGDRASIL had its vast wealth of leaves eaten by the Devourer of the Nine Worlds., causing them to fall one after the other, until only nine were left. These nine leaves from the World Tree were the previous incarnations of the Nine Worlds: Asgard, Álfheim, Vanaheim, Niðavellir, Midgard, Jötunheim, Niflheim, Helheim and Múspellsheim.

When Ulbert Alain Odle was casting his [Grand Catastrophe] spell, it was said that the fallen leaves of the World Tree had a malice of their own. If his spell takes effect, the leaves' curse would be given a physical form upon successful casting.

The Bloody Valkyrie Arc
Ainz recalled the brief history behind the nine worlds and the many World Items that had its origins trace back to the World Tree YGGDRASIL.

Abilities and Powers
This World Tree was what gave birth to the many World Items out there and the nine worlds they are found undiscovered randomly in by players.

Trivia

 * Each leaf from the World Tree are said to be the symbolic representation of all the nine worlds and two hundred World Items whom are existential to the game.
 * In the New World, the floating city of Eryuentiu formerly owned by the Eight Greed Kings was said to have a meaning behind its name similar to the World Tree YGGDRASIL. According to Fluder Paradyne, it means ‘the tree in the center of the world’ in an ancient tongue.