Portal idear

I Just want to give my idear , for the 1 Portal discussion.

Just make an Oman, that allow you to save your Portal on use. This only can Be used 3 Times per map. After that, the map Is closed.

This Omen should BE common Like the alchemy Omen .
Everyone can decided on which map they want to use this Omen.
So WE will have 1 Portal for normal mapping, and when WE Juice the Maps, WE can use this Omen to save our Money , WE invested in such Maps.