Not sure if this idea is to simple, but what about something that involves Xel'Naga towers. for example instead of gaining sight from them; your units could gain an attack bonus, or your units are able to teleport from one tower to another, or it could just weaken you enemy. all that while maintaining the key characteristic that it's inactive while two enemies are next to it, or no one is next to it.
i do know it does seem to play a bit with aura's, but i have seen very little stuff with the towers. anyways just an idea.
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Not sure if this idea is to simple, but what about something that involves Xel'Naga towers. for example instead of gaining sight from them; your units could gain an attack bonus, or your units are able to teleport from one tower to another, or it could just weaken you enemy. all that while maintaining the key characteristic that it's inactive while two enemies are next to it, or no one is next to it.
i do know it does seem to play a bit with aura's, but i have seen very little stuff with the towers. anyways just an idea.