Translated by XephiZ
Edited by Aelryinth
Even though many Commander-level creatures could easily jump to a height of over fifty meters, meaning that a wall of fifty meters was nowhere near high enough to trap the Commander-level rock demons inside, the spell obviously had other suppressive effects. Within the Rising Ground Cage tiny motes of dust, like some sticky sand particles, were present. When the creatures trapped inside the cage tried to jump out, the sand swiftly clung to the creatures like gum.
The Granite Beasts were able to use Earth Magic too, so they could also set up a similar cage, but their cages did not have the sticky sand. They had no chance of leaving the pen without getting rid of the sand!
"Didn't you like throwing rocks around? I'll give you a big one!"
I think they should set up a dialogue, and get Earth Mages working with them. I can totally see a bunch of people putting on their mud monsters and going around as hulking stone beasts for eight hours before clocking out...