lepus212123
Terrarian
1.4 has made getting all items from a single world much easier with the dryad selling the alternate evil's seeds in echo mist, letting you farm for ichor in corrupt worlds or get the worm scarf in crimson worlds. But there are still a few items locked to each world, which are the biome mimic drops. The only way to get, for example, both the putrid scent and the flesh knuckles in the same world are to either use the drunk worldgen seed, or use a temporary secondary world just for the biome mimics and bring the items back. It would make things much easier if you could summon the alternate evil mimic by placing the Key Of Night in a chest that's within echo mist.