Manipulation of Earth, Earth Domain Spells, Destiny Guidance, Earth Escape Technique, all these abilities should originate from the special profession of Earth Watcher.
Among them, Manipulation of Earth belongs to a control series ability, which is quite unique. It's a sort of general capability, similar to how Gaven manipulates shadows.
When used effectively, the value it unleashes is incomparable to a specific Special Ability, due to its versatile characteristics.
However, it also has its own fatal flaw, which is that the power it exerts isn't particularly strong. At best, it equates to a first-ring spell. Forget about offense; its main purpose is to be sneaky, to surprise enemies, create trouble for them, and to generate attack opportunities for oneself.