We can't find any source for this item (quests reward, drop, etc). It's highly probable this item is not obtainable right now.
Same as @chia. Mine dropped with leeching and I've seen a groupmate link one with siphoning. looks like no DmgType x2 perks are allowed on it just like on everything else . Absolutely trash ring then lol
seen it drop 600 with siphoning/leeching 3rd perk
Guess I'll have to find out when it drops :p
Since it has Keen Awareness on it does it mean that it can only roll Leeching or Siphoning if 600 GS?
i drop this m10 depths but which one boss or mobs i don t know.