Mother Tree

Overview
The Mother Tree is based loosely on the Hometree and other "Great Trees" of ancient mythological lore."Hometrees are generally described as being more than a hundred meters tall, with a hollow base supported by mangrove-like roots. Within this base there are many columns, creating a large central area. In this central area the branches and limbs of the tree form a natural spiral staircase, which the Na'vi use to move up and down the tree. Per the Pandorapedia, 'The name Hometree is misleading, as the structure is actually comprised of a grove of intertwined trees of the same species that have grown together, providing for mutual strength and structural reinforcement. This, coupled with Pandora's low gravity, is what accounts for the immense height of Hometree. The Omaticaya revere this quality of Hometree as a constant reminder that a community is stronger and more resilient than the sum of the individuals who comprise it.'"Via James Cameron Wiki

Benefits

 * Tile Improvement costs reduced by 20% across the Civilization that owns it
 * Provides +50% growth rate buff to the Civilization that owns it
 * Adds a 100% bonus to the number of Tile Improvements that can be built in the Town that owns it.