Wirewood is defined by its tall, thin, light-barked birch trees.
The Phyrexian invasion forced elves and many other races to flee their homelands across Dominaria. Crowds of refugee elves fled to Wirewood, a place teeming with life but also harboring its own unique dangers. Wirewood's refugee elves improvised weaponry and armor from the creatures and plants they found there, and developed magic to survive the dangers of their new home.
Over time, the magic emanating from the Mirari gradually warped and changed the elves, turning them both more beastly and more plantlike until they became mutant monsters of the forest.
"Though you may leave this haven we have found, may our strength never leave you." (Wirewood Pride)
It drinks fatigue. (Wirewood Symbiote)
"She is truly Wirewood's child now." -Elvish refugee (Wirewood Savage)
They say the forest has eyes. They never mention its claws. (Claws of Wirewood)
"Your words are meaningless. The rustling of leaves is the only language that makes any sense." (Wirewood Channeler)
"Most insects have been drawn to the Mirari. But all that remain in Wirewood are under my care." (Wirewood Hivemaster)
"The land belongs to nature as far as our eyes can see. The higher we climb, the more we can see." (Wirewood Elf)
Tall as a tree and probably related. (Wirewood Guardian)
The goblins laughed as the elf ran away, until more came back. (Wirewood Herald)