Eco is a character in Eclipsed, a mod for The Binding of Isaac.

Echo Chamber - 3 charge, on use saves current room and opens portal to it in starting room.

Spawns portals instead doors, except secret room holes and red room doors. Pressing Tab (Map) button opens/closes portals. Every room contains portal leading to starting room. After defeating boss, every room contains portal leading to boss room.

Portals always lead to adjacent rooms and rooms visible on the map.

• Download Eclipsed from the Steam Workshop.