Unit Upgrade

[unique.spectral]

Hello Guys, I want upgrade my summoning unit in my map (like dota units owner isnt any player) then this upgrades is manual. if i explain well tell me to explain better.

 

[Awsan]

Sell an item in a shop owned by neutral. Make the cost of the item how expensive you want the upgrade to be. When the item is bought remove the item from the game. Make a trigger, that when the item is bought, will research upgrade X for the owner of the neutral summoning units.