Rune Song
Rune Song is a legendary sword whose materials are described as elusive and tied to unique world scenes.
How it works
The progression passage labels Rune Song legendary and says its materials are found in unique Azeos' Wilderness and/or Forgotten Ruins scenes. Those scenes dynamically spawn through exploration, which the source says causes many players difficulty. The passage describes legendary items as optional and potentially very time-consuming to assemble.
Read the supporting references
A source-bounded reference to named equipment, crafting stations, and soul abilities in the retrieved Core Keeper progression passage (s2). Steam metadata establishes game identity only. Details from s1 are excluded because its item claims are not corroborated in s2; s3 contains unrelated or contradictory material. The sources do not establish current balance, exhaustive item coverage, or comparative effectiveness. Guidance explains the referenced mechanics; it is not a tested damage ranking. Check the stated edition and source version before applying a patch-specific detail.