The Second Charm of Making, said to "affect all Matter governed by the Lunar Ray," is actually composed of Welsh words. The only real problem with it is that it seems to have become bastardized over the centuries, so that the original meaning of the spell has become lost. Below is my best attempt at restoring the original Mantra or Spell. I believe its intended purpose is to invoke Mental Clarity and Visions.
The words are given within The 21 Lessons of Merlyn and The Lost Books of Merlyn as follows:
A ELFYNTODD DWYR SYNDDYN DUW
CERRIG YR FFERLURIG NWYN;
OS SYRIAETH ECH SAFFAER TU
FEWR ECHLYN MOR, NECROMBOR LLUN.
One source online translates this as:
"O Elements of Water which lead the God
of rocks that armor hunger if knighthood your Safire
the great side of the axis as dark as the moon."
The author of the translation given above has a negative opinion of Douglas Monroe’s books and appears to have done a quick, poor translation in order to both confuse readers of Mr. Monroe's books and to cast doubt on the metaphysical system taught through the series.
The spell should, most likely, be written as:
A elfin todd Dwr syn dyn Duw
Cerrig Yr Fferru lurig Nwyn;
Os Syrthiad Ach safonol taer tuedd
ffer Echelin Mor, cnec trom bore Llun.
This translates as:
By the element of Water Dissolving Human Fear of God
The Stone Solidifies gas;
If Roots that Fell are quickly accepted by Inclination
as forming the center, to illuminate a picture. (can be read\understood as: ‘to gain an enlightened view‘)
The spell seems to be written in a type of Twilight Language, which can be further interpreted as:
Through the Watery Dissolution of Human Fear of the Divine
The [Philosopher’s] Stone makes manifest the Invisible;
The mind sifts through buried content (fallen roots) to gain an enlightened view.