If you need a Muramasa, try this seed: 3.1.1.887209632 : r/Terraria

Everyone talks about the reaver shark but we can't forget the muramasa : r/ Terraria

Top 13 Best Seeds to Get in Terraria

Muramasa rework pls? I mean it a pretty good sword for pre hard mode but for me this weapon is “that one sword you need to craft zenith” : r/Terraria

Seed with 2 Pyramids, Flying Carpet and Pharaoh's set: (classic, crimson, medium, 2.1.2.1938042875) : r/Terraria

Muramasa Terraria Guide - Indie Game Culture

1.4] Using the seed 3.1.2.129639826 gives you not one, but TWO enchanted swords next to each other on the far left near the ocean. Needs to be a Large world with Crimson.

Terraria PC STILL WORKING - Muramasa AND Golden Key Seed!

Terraria 1.4.4.9 - 10 Best Seeds, How to get muramasa, enchanted sword, Terragrim

Muramasa rework pls? I mean it a pretty good sword for pre hard mode but for me this weapon is “that one sword you need to craft zenith” : r/Terraria

How To Get Muramasa (With Seed) In Terraria