Very practical defense Spell!
Later, Peng Bo demonstrated other unique techniques, such as extending his hand and scattering a handful of gravel toward the enemy, which turned into hard objects and became stuck in the enemy's joints...
For example, extending spikes from the Rock Armor, turning himself into a hedgehog, where he could charge straight into the enemy and pierce them like a honeycomb.
This belonged to an extension of Magic, transforming a defensive Magic into a Thorny Armor that incorporated both attack and defense.
Changing the concept of Armor wasn't unusual, however...
Eileen instructed another Earth Series Ability User present, who was only second to Peng Bo, to replicate Peng Bo's Thorny Armor.
This Earth Series Ability User had strong control abilities, stepping forward as the ground's soil automatically adhered to him, forming a suit of Rock Armor strikingly similar to Peng Bo's.