I like the Boon and Bane mechanic instead of advantage, but the terms are not my favorite (specifically the past-tense of "bane" being "baned" is rough on my dyslexia.) All that said, I'd still like to use terms that folks may already know.

What other terms for the same mechanic have you seen that are already in-use? (Bonus points if they hint at the math a bit, like 'boost' and 'curb' or something.)