Pseudoname
Terrarian
thats boring and inconsistent. no other biome gets flat immunity, they're instead preserved by mixing. jungle grass becomes corrupt jungle grass. mud becomes ebonslime or somesuch. its preserved and still allows fighting corruption to be a thing. we even get hallowed *palm trees* and they're just cosmetic, so why not jungle? just make it behave like tainted ice biome does."we'll make Jungles immune to evil biomes" like they did with Hallow.
flat immunity is the bandiad. chlorophyte is some failed attempt at an interesting new solution