Ethereal, sometimes referred to as ghost form, is a type of status effect that makes affected units immune to all physical damage, grants them attack immunity, while also disarming them. It also reduces their magic resistance, causing them to take additional magical damage. Affected units are able to control every other aspect of their character.
Ethereal units are normally and fully affected by spells. However, physical damage is blocked. For example, dispel anything.cannot damage ethereal units, but still stuns and slows them. Ethereal state does not
The magic resistance reduction of multiple ethereal effects does not stack, the one with higher value takes priority.
Sources of ethereal