Note: Kevin Crawford's "Worlds Without Number" (2021) includes a refined version of the domain rules found in Echo, but the tone is more fantasy than the sword-and-sorcery vibe of the original.
One weakness of many campaigns is that players hoard gold. An Echo Resounding fixes this by requiring gold to fuel "Projects." an echo resounding pdf full
An Echo, Resounding is both a generic Labyrinth Lord sourcebook providing rules and advice for "lordship and war in untamed lands" GROGNARDIA An Echo, Resounding: A Sourcebook for Lordship and War an echo resounding pdf full