Rock Shield is a spell used by mainly the people living in Perennial Grove and some tueritors. It was created by Clover.
The time length of this defense varies on the user's strength. The more experienced the user, the longer it will stay up and be more durable.
The user's hands will slam onto the ground, summoning a large rock wall to cover block any attacks that may hit the user. It can hold against normal or weak attacks, but will crumble easily if a strong attack hits it. It will fall apart eventually after it is summoned.