In addition to being the most dangerous spell, it's the only spell that DS actually describes the physics behind.
If they couldn't, it meant that the killer had a hired gun, someone who could pull off a delicate and dangerous spell like that.
Then we got word that he was continuing his work on his own and intended to provide dangerous spells to the magical community.
Now weary residents of Eastern Canada, already reeling from the most damaging winter storm in memory, are shivering under a dangerous cold spell.
It's like when Frau Winter does one of her dangerous spells.
Accordingly, the animals he wishes for are more frightening, indicating his more dangerous spell.
It was an exceptionally dangerous spell because it unbalanced the emotional trine of anger, lust, and love.
While the Death Eaters practice "dark magic", illegal and dangerous spells, their ideology, such as it is, is a version of racial supremacy.
The unresolved, explosive turmoil in him hung like a dangerous spell over the room.
It was a most dangerous spell, risking both body and soul of the caster.