I want a skill that playes a new Building. But For the 4 levels of the Skill, there should be a maximum of 1-4 buildings on the map. If e.g. with level 2, there are 2 buildings on the map, the skill should replace the oldest of the 2 with the new one. But how do I easily get the oldest building?
p.s.: For the Dota-Players: Skill should be like Broodmother -> Web
p.s.: For the Dota-Players: Skill should be like Broodmother -> Web