How to get Murasama early?

The Powder Toy - Muramasa - Terraria Sword by TheNumberCrucher

it won't let me craft scaffold i have all the materals : r/CalamityMod

I know that the fandom is bs, but some of the info is from addon mods like noxus. is this murasama info on the fake wiki from another mod? if so what

White Muramasa, Gaia Items Wiki

terraria muramasa sword｜TikTok Search

Muramasa Blade –Fortnite Epic

Guys was i suposed to find murasama in pre-hardmode? : r/CalamityMod

200 Terraria ideas terrarium, terraria house design, terraria house ideas

terraria, but i start with 1 damage Murasama

Dragon Rage - Official Calamity Mod Wiki