Before the Heaven-Gifted Plane advanced to a Tenth-Rank plane, it had been immensely prosperous, with many Ninth-Rank powerhouses among the Indigenous Empires across its five continents.
As the plane advanced and its internal space expanded, the Indigenous Empires and the expeditionary armies from other planes scrambled to seize the new land.
The space created by these advancements and expansions had never been explored before, making it the richest in resources.
They claimed to be advancing steadily, but in truth, the Dragon, Myconid, and Bone Spirit Allied Forces were the most efficient expeditionary army on the Eastern Continent.
Wherever the Steel Torrent rolled, mycelium spread, and Magic Rune Walls rose in its wake. They consolidated their gains at astonishing speed.
Anyone who visited the allied forces' base camp would witness a sight they would never forget.
Tower after tower of High Tower Castles seemed to grow legs as they rose from Block Cities on other planes and traveled through the Spore Gates to the Heaven-Gifted Plane. Under the control of the Tower Spirits, they stood tall in the centers of its Nine-Grid Districts.
Thanks to the efforts of the Skeleton Mage researchers, the Wrynn Family's High Tower Castles had come to life.
The Block Cities became their foundations, while the structures called High Tower Castles—which were in fact Mage Towers—could be assembled from modular components.
One High Tower Castle after another assembled into Block Cities. Combined with the swiftly constructed Wrynn Dark Tower system, they formed impregnable war cities.
Some High Tower Castles advanced to the front lines and unleashed their Castle Cannons, bombarding the Indigenous defenses.
Once a mobile High Tower Castle ran low on stored energy, it returned to a Block City to serve as its foundation and recharge through the elemental wells of the Wrynn Dark Tower system.