Break their minds or their bodies with these various poison spells.
Poison is another underrepresented source of damage in 5e, which makes sense given all the monsters which have resistance/immunity to it. As a "professional homebrewer" (Can't believe that's technically my job), I feel like it is my duty to create content for it.
I have a poisonous cleric subclass on the backburner as well, which you will all like hopefully!
Take Care!