@KatherinWinter
No it means he could make a crystal wall to block off enemies or something and run to escape. Assuming the enemies couldn't blast through it, they'd be forced to find amother route. After about an hour, the formation would crumble. However let's say he was guarding a comrade or civilian. He would be able to reinforce the wall and maintain it much longer. Perhaps an hour is a bit long but it's crystal not water so once it's a solid formation. I assume it would hold its shape for a long period of time.
No it means he could make a crystal wall to block off enemies or something and run to escape. Assuming the enemies couldn't blast through it, they'd be forced to find amother route. After about an hour, the formation would crumble. However let's say he was guarding a comrade or civilian. He would be able to reinforce the wall and maintain it much longer. Perhaps an hour is a bit long but it's crystal not water so once it's a solid formation. I assume it would hold its shape for a long period of time.