Hey all!
First things first, excuse my bad english.
So I play on a black metal band and we used to have a keyboardist but not anymore, as we live on a small city and we're unable to find one that wants to play black metal. We've been composing and playing gigs without a keyboardist and now we have a slightly different sound but we could adapt the songs well to play without the keyboard, as it mainly played atmospheric melodies and almost no leads.
Recently, my friend, the guitarist went to see Inferno (the czech BM band) and he noticed that Ska Gul, the guitarist, has got a guitar pedal that sounds like a choir, so now he wants one to substitute our lack of keyboards. And if the same pedal has a delay for the guitar as well, even better (idk if thats even possible, im a drummer).
So, what do you reccomend?

Thanks in advance

It sounds like you're after something like the Boss SYN-1.

This one doesn't have a choir voicing per se, but there are other options that do something similar, this one is just one of the least expensive I've seen. Hell, have your guitarist reach out to Inferno and ask what they're using.