Depletion Garden

Depletion Garden (枯渇庭園) is the Reality Marble of Yumizuki Satsuki.

As the name "depletion" implies, it rapidly decreases the mana of the area where the Reality Marble is expanded. It's somehow close to Tohno Akiha's Plundering ability, but in this case, it only drains the mana from the environment, and not the od in living creatures. Also, the withered mana doesn't go to Satsuki, but actually disappears.

For a magus who needs mana to attack or the spirits who need mana to exist, this is a very effective terrain. But it is it has no dramatic effect on the living creatures that are cut off from the World (such as humans who don't use mana).