Dr Strange then explains how the spell shows the target an image of everyone they've ever slain. Maybe no big deal for 90% of foes. But if you're Galactus and eat planets all day, it's exactly the right spell. That's how magic would be, in my perfect worldgame. Devastating when the planets align and the situation is precisely right, otherwise kinda meh.
But we don't live in that perfect world/game and this is a game not a novel so I can live with utility spells if they've got enough flavor. We all have to make compromises in this cruel vale of tears.
Even Dr Strange uses a Bolt of Bedevillment half the time. Lazy ass.