The Mother Earth potion stimulated the mana and the auxiliary cores of the members of the Corpse so that they would absorb the surrounding world energy much faster than usual.
For the next few minutes, every time one of the fake Awakened had a moment of respite, their vitality and mana would constantly replenish as if they used a breathing technique. In theory, by taking turns to attack and defend, they were nigh-invincible.
In theory.
The members of the Corpse had those two words tattooed on some part of their bodies, as a constant reminder that when reality begged to differ, bad things happened. On top of that, the tattoo also worked as a multi-function potion.
Tyris had found samples of Hatorne's ink from the rubbles of Kandria and had reverse-engineered her methods. The tattoo had the same properties of a nutrients, of a body enhancing potion, and of a tonic at the same time.