A line of anime-flavored exaggeration. 負のオーラ ('negative aura') is a modern Japanese idiom describing bad vibes emanating from a person — absorbed via anime/manga into common speech. すっごい is the emphatic colloquial form of すごい, with the small っ adding intensifying length. The ~よ at the end with rising intonation turns the statement into a half-question, checking if the listener shares the perception.