I could see something like plant growth for all rangers, with some heavy restrictions:

Lag like sanctify room (means the ranger is out of camo and lagged out for several ticks).

Causes any non-wild mobs in the room when you cast it to be aggro.

Long cooldown timer (100-200 hours)

Can't be used in a protected city.



Definitely not auto-home terrain though. Don't think that would be OP, probably not even something you would use often. But it could open up some options.