Workaround: In a repeating command block in spawn chunks run effect clear @a requiem:attrition.

Probably a good idea, though keep in mind attrition is meant to balance the mod. If you still want to retain some balance, I made an addon mod called Requiem Lifeline that makes attrition a bit more manageable in the early game.

Actually, even better idea is a max attrition gamerule. Attrition 4 can be a bit much, so a gamerule to reduce that might make it more manageable.

I know, I sent that before remembering how attrition works effect-wise and how it would function gamerule-wise.

So something like /gamerule requiem:maxAttrition (0-255) with 0 disabling it entirely and each number above zero being the effect’s level?

Yeah, though attrition doesn't actually have additional effects beyond level 4 so really just 0-4.

Alright.

Well really, -1 would likely disable it since effect level 0 is basically just effect level 1.

Uhhh, this is gonna display in the world creation menu. Let's stick to the displayed level numbers, not the technical ones.

I am in support of this request fyi, good idea.