Triton Prophecy of the Magma Trench

This is a prophecy handed down by the tritons of the Magma Trench.  The prophecy is ebbs and flows in the memory of Thalassa's followers.
An ebb and flow
of steam and growth
Our creed and deed
Rung and smote
The birth of sanctum
Jubilation
The death of Builder
Dissemination
Hammer to anvil
Haft to sail
Chisel to note
Gripped entrails
When the deep forge sleeps
the foe awakes
With pressure built
Chaos prevails