Sounds like someone in a drug dazed depression. What led me to believe this was this line...
in debile coil of smoke suspires
debile mean weak
Suspire means breath
also this
ceased to milch the clover flower
Milch is mid english meaning milk
After this out of curiosity I checked out wikipedia for Tiamat. This is what I found.

A Deeper Kind of Slumber is the 1997 Century Media Records release by Swedish band Tiamat.
It was also the first production after their relocation to Germany, and was written almost entirely by founder/lead songwriter Johan Edlund.
Much
of the music had reflected on Edlund's personal problems dealing with drugs, creative differences within the band as well as an interpersonal
relationship.
It was produced by both Edlund and Dirk Draeger.

my guess is that Edlund was an opium smoker...
[edit on 6/7/2008 by eye open doors]