The verb used would be ‘is’ because we’re talking about a group of people in the present tense. I feel we would use ‘are’ only if there were specific things were were talking about, like [we] are, [you] are, [jack and jill] are, etc. Though, this wouldn’t be the case with he and she, because they always need to be in present tense.
honestly, "as the devil would have it" has a negative effect on the person/thing because as we all can agree, NOONE should mess with the devil :)))
F- for
A- and
N- nor
B-but
O- or
Y- yet
S- so
help students remember coordinating conjunctions.