hello and wlc to my guide in this guide will try my best to teach you best and fests way to get the mark of Shadow / enchanting guide for Mark of Shadow.
so first let's talk about my experience with drop rate m and after this, we will go into detail about how to get it.
mark of shadow is EZ drop to get for exp most of the time get 2,3 in one 1h.
(note: I don't use any buff and got my node to 0 for this guide so all of the drops that got are just from a 0lvl node )
this is few screen-shot :




where to get it :



mobs that drop it :
all the mobs at abandoned monastery drop the ring except the bat.

now my method of farming them :
first thing first if you have balls use arsha channel (its + drop rate by %50).
so what do its just hunting down elites because they have more drop rate than other mobs, you can go crazy and farm them but from my test, it's really waste of time because they have low chances of ring drops, so just stick to my plan, just keep your eye on mini map and take out elites there are just 3 elite.





my result from 1h of grinding :
magic crystal x15 : 15 * 150,000 = 2250000
mark of shadow x3 : 3 * 6m = 18000000
black stone x3: I can't say the value of them because market change every min (note: just got 3 rest are from somewhere else )
junk item & gear: I didn't sell them because of having more important stuff to sell but can tell they make something around 1 to 2m on market




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take note that was waiting 15min for elites to respawn, I recommend you play other game at that time and have bdo run as a try (my game was realm of mad god XD)