propitiousness (en)

(adjective) favorably disposed; benevolent / (adjective) being a good omen; auspicious / (adjective) tending to favor; advantageous

soporific (en)

(adjective) causing or tending to cause sleep / (adjective) tending to dull awareness or alertness / (adjective) of, relating to, or marked by sleepiness or lethargy / (noun) a soporific agent / (noun) hypnotic