Destroying a wall is a small feat for a Wizard of his magnitude. There have been times he has been covered head to toe in blood. When he loses his temper, no one is safe and he does not mourn their loss. One has to feel empathy for that.

"You could see it that way. Charms can destroy, fix, conceal, protect, defend... The spells add properties to that which already exists." he waves a pale hand to the barrier he had created, "The space around us was blocked by an invisible wall and, as you surmised, the electricity in the lightning was...repurposed. It exists in the air naturally and the spell caused it to gather into a powerful force. I then directed it."

He is not a bad teacher if one ignores his aura.

"There are Hexes, Curses and spells for Transfiguration too."