If you, like me, completed Devan's quest without realizing it would trash your Tuffein faction and did not complete Costica's quests there is another way to get them without grinding faction back up.
I can confirm that Puppet Strings will work to charm Costica, and while you have him charmed you can receive his quests and turn them in. That being said you'll have to be creative about not getting aggro from his friends before clicking the strings(or using a normal charm if capable). Not to mention getting the Puppet Strings may prove difficult depending on your server.
I haven't tested this but I wouldn't be too surprised if you could drag an Enchanter or Bard along that can charm him (he's level 43 when I /con him, not 50 as above) then hail him to receive the quests. Or, hopefully you get his quests out of the way before Devan's and can avoid this whole mess in the first place...
Costica regards you indifferently -- You would probably win this fight..it's not certain though.
You say, 'Hail, Costica'
Costica says 'Why hello. It is great to meet you. We have [heard about] you.'
You say, 'heard about'
Costica says 'Yes. You have composed yourself with great valor, and unlike those silly [Minohten] we appreciate someone with your skills. Perhaps you will be willing to do a few [tasks] for us?'
You say, 'tasks'
Costica says 'Those Minohten take themselves too seriously, so we like to tweak their tails from time to time. Why don't you help us [show them] humor again.'
You say, 'show them'
Costica says 'I have these three things you can do to tweak their tails.'
At this point, Costica offers 3 different quests:
You have been assigned the task 'Minohten Mushrooms'.
Task steps for Minohten Mushrooms: Find the Minohten camp - 0/1 - Goru`kar Mesa Steal some of the mushrooms the Minohtens sue for food. - 0/4 - Goru`kar Mesa Speak with Costica - 0/1 - Goru`kar Mesa
Your task 'Minohten Mushrooms' has been updated. Your Location is -1027.90, 1156.54, 91.30
This step is similar to the Devan quest "We Need Supplies" where bags at the Minohten camp are sometimes similar to ground spawns and where you get the Mushrooms from.
Your task 'Minohten Mushrooms' has been updated. Your Location is -555.25, 1177.05, 92.78
You say, 'Hail, Costica' Your task 'Minohten Mushrooms' has been updated. Your work will make their food tasteless. Your faction standing with Tuffein got better. Your faction standing with Tuffein Leadership got better. Your faction standing with Minohten got worse. Your faction standing with Nymphs of the Windwillow got worse. You gain experience!!
You have been assigned the task 'No Place Like Home'.
Task steps for No Place LIke Home: Find the Minohten camp - 0/1 - Goru`kar Mesa Destroy the Minohten tents - 0/2 - Goru`kar Mesa Speak with Costica - 0/1 - Goru`kar Mesa
Your task 'No Place Like Home' has been updated. Your Location is -1027.90, 1156.54, 91.30
You slash a Minohten tent for 85 points of damage. Your task 'No Place Like Home' has been updated. Your Location is -571.83, 1067.35, 89.81
You slash a Minohten tent for 114 points of damage. Your task 'No Place Like Home' has been updated. Your Location is -966.42, 1140.07, 91.15
You say, 'Hail, Costica' Your task 'No Place Like Home' has been updated. With their tents in ruins the Minohtens may concentrate on hunting for resources to rebuild rather than hunting Tuffien. Your faction standing with Tuffein got better. Your faction standing with Tuffein Leadership got better. Your faction standing with Minohten got worse. Your faction standing with Nymphs of the Windwillow got worse. You gain experience!!
You have been assigned the task 'Reduce the Scouts'.
Task steps for Reduce the Scouts: Kill 4 Minohten scouts. - 0/4 - Goru`kar Mesa Speak with Costica - 0/1 - Goru`kar Mesa
Your task 'Reduce the Scouts' has been updated. You gain experience!! a Minohten scout's corpse says 'I die defending my people.' You have slain a Minohten scout!
You say, 'Hail, Costica' Your task 'Reduce the Scouts' has been updated. That will teach them to keep their horns out of where they do not belong. Your faction standing with Tuffein got better. Your faction standing with Tuffein Leadership got better. Your faction standing with Minohten got worse. Your faction standing with Nymphs of the Windwillow got worse. You gain experience!!
Minohten camp is north west of Tuffen camp across teh river a bit; if you have maps it should be marked
Upon getting to the camp Minohten Mushroom and No Place Like Home update . . . Minohten Mushroom step 2 - Steal some of the mushrooms then Minohten use for food After goofing around this camp a bit I have no clue what mushrooms its talking about so . . . there is one other step after that
No Place Like Home Step 2 - Destroy 2 tents Easy as pie - target one of the 6 or 7 tents and bam (with Reproach lvl 68 cleric dmg spell went on first hit but had nothing else memed so dont know the actual hp of tents) Step 3 Speak with Costica
Reduce the Scouts after killing the 4 scouts who are probably druids with druid-like spells updates step 2 speak with Costica
get xp as a reward dont know how much as im not low enough for quest to help . . . Good luck any who try it
While exploring for another quest I hailed Devan and Costica . . . Follow talk or say 'show them' over and over to get quests quest 1 - Minohten Mushrooms Find the Minohten camp in Goru'kar quest 2 - No Place Like Home Find the Minohten camp quest 3 - Reduce the Scouts Kill 4 Minohten scouts Of course this is a lvl 40 to 50? quest but I'll follow it throu and post more . . .