A custom system I made myself, although not exactly an original idea, just an original take on it. So, as you progress through Rebirths, your power increases.
Rebirth 0:
http://prntscr.com/1vrt10
Rebirth 100:
http://prntscr.com/1vrt83
The damage is calculated as so:
Code:
damage = damage * (rebirth / 5)
Teleporters:
Non-Rebirth Teleporter:
http://prntscr.com/1vwmfx
Rebirth Teleporter:
http://prntscr.com/1vwmk3
Those teleporters are temporarily set as shown in the picture, but can be changed in the future, these are just random zones, not actual content.