Decided to post this since it isnt in alla's yet.
Very easy to get, the quest is "The Needy" and it requires you to collect/kill in Arcstone. The missions starts in Relic with Borso, and I duoed the quest in about 2 hours for both toons...of note ALL these mobs summon.
1. 10 riverbed mistwalkers (although ANY of the Mistwalker mobs count towards totals) and turn in 4 water vials .Mobs proc a stun with minor dd, and spawn a "reflection" that hits for ~350. mob max hit was around 800.
2. 10 tanglefoots (any of the root mobs will work, lesser etc) and collect 4 seed pods. Mobs proc a nasty ae root with dd, fully slowable. max hit was around 800.
3. 10 Firetails (any of them) and collect 4 hearts, firetails also spawn a mini which hits for ~350.
**of note, while clearing these be on the lookout for Shekar (drop BP mark) and Embra (drops Leg mark). These named arent any harder than the normal mobs from my experience, just a few more hp.

Turn in your items for melee ring (http://lucy.allakhazam.com/item.html?id=39705) or caster earring (http://lucy.allakhazam.com/item.html?id=39706)

Cool! I will have to check this out, as I really need a new earring. I found it odd that the melee ring is listed as a wind instrument - heh.

besides the tangleroots, nothing seemed to summon to me. Maybe some summon, but not all.

Singing, Bard on Xegony

The plain 'tangleroots' will summon. Greater and lesser don't appear to, from what I saw today.

this Quest is actually called " Crossfire"

this Quest is actually called " Crossfire"
The quest mentioned above is correctly named. Crossfire is aug quest.

this Quest is actually called " Crossfire"


Crossfire results in an 55 hp/mana/end aug...this quest is just as easy, and much easier (depending on gear of course) than "A Shopkeeper's Delight"...This is the other quest borso gives out.

Borso quests a ring/earring for both melee and casters

sorry re looked and was tired ............. i stand corrected

The Crossfire solo mission is given by G'kil Zon not Borso. This NPC is to the South, next to Borso in Relic.

Crossfire

ission Objective:
Kill 15 Fallen Spirits
Loot 4 Arcstone Spirit Dust from Fallen Spirits (common)
Kill 15 Spirit Stags
Loot 4 Spirit Stag Hoof from Spirit Stags
Kill 1 the Master of the Herd
Deliver 4 Arcstone Spirit Dust to G'kil Zon

Reward:
Relic Shopkeeper's Charm (http://lucy.allakhazam.com/item.html?id=39710)

Well thanks for your post Stumps, because it is the dircet result of the info you provided I have now got a nice new ear ring for my drood and a ring each for my bst and pally. Thanks for sharing and keep up the good work!