
Claxon |

It's magic adjacent, but it's not a spell.
Remember the disappointing thing about spellbane is that it only works against spells and spell like abilities specifically, not anything that's magical.
And though I don't usually look at the Bestiary too much, I think many abilities enemies have tend to be not spells or spell like abilities, so spell bane doesn't apply.
Edit: To clarify the 3rd category of magical but not spell or spell like is supernatural. I don't think there's anything but those 3.
I guess extraordinary, if that's even in Starfinder, but those are explicitly not magic. Just "extraordinary".