You would still need an amount of Tissue Samples, I'll reduce the drop chance tho.
I find myself in a variety of places during slime rain, be it Fishing at the Ocean, exploring the Snow Biome, and more. Plus, this gives players the chance to go out and explore the slime rain, rather than stay in one place!
Ah, but the slime rain is only a surface event. As soon as you hit underground, regular mobs spawn.
Also, added the Living Loom Drop to Purity Slimes and made the chance of getting Crimtane Ore lower from Crimtane Slimes!