When the Imposter is Sus Magic's circle.
Wait, what is When the Imposter is Sus Magic?
When a wizard with double Aether magic combines both of their Aether magics, it results in this extremely instable magic. It's so unstable, it could possibly destroy the entire solar system if it is used too recklessly. On the other hand, despite the Magic's extremely long cast time, with the Q's cast time clocking in at a whopping 20 SECONDS, however, this magic can ONE SHOT ANYTHING. ANYTHING. Except Durza, you need to use it twice against him.
Ultimate Spell: Suspicious Annihilation
First, the user summons up a humongous Magic Circle...
...then begins to charge a huge amount of suspicious energy...
...before unleashing it as a GIGANTIC beam, that, mentioned before, will one-shot almost anybody or anything in the entire game. If the beam itself doesn't hit you, then sure will the massive shockwave that this move creates.