The item was "Of Fortune" with a mid-level runic, with 150 luck, and DCI as a random.
This was followed by the whetstone.
The crafter then powdered it, raised DCI to 15% (the max from imbuing), then imbued SC -1 & FC 1.
The other properties are
SC -1
FC 1
DCI 15%
That's unweighted 450 intensity, and even with weighting still falls under 500.
The end step is enhance with a Forged metal tool using Gold. That's where the Lower Requirements comes from (no sane person would imbue LR on a dagger)