Moon-Kissed is a stat boost that affects the luck of the Subtalleon in artwork of it if it is nighttime, and also decreases luck during daytime.
Tier 1
+15 Luck in artwork depicting nighttime, and -5 Luck during daytime.
Tier 2
In artwork depicting nighttime, +20 Luck, and -10 Luck during daytime.
Tier 3
In artwork depicting nighttime, +20 Luck, plus doubles most individual items found, and -10 Luck during daytime.