Impossible Mission!

How will Elias protect himself from the North? He has no idea, all he knew was that it hindered his recovery.

The fact that he stood in the middle of two winds and each of them roasted half of him implied that he was regaining more of his mind.

"Raise a wall with Bricks!" He uttered, that was when the Southern Wind came, it cleared his mind and made him have reasonable thoughts.

"No, Boulders!" 

That will be hard as the materials needed are a bit far from him, taking a step toward them will freeze his mind. 

Growing Isle sensed his intention and made Graced White Sand appear everywhere around him and even on the mound. That negated the sense of dread to the minimum.

He took a step and he felt nothing. 

The first thing he did was went to the puddle of water and dug out clay and began moulding it into a shovel. Then he used the Wand instinctively to make it hard and strong.