Nice set overall, gloves and helm could be a little better, same with the set bonuses. The 2-piece bonus is hardly noticeable, 4-piece is really nice, even better if used with a 24/0/27 build, I haven't tested the 6 piece but who uses regrowth in PvE anyways? I haven't tested 8 piece either but 30% of a rank 4-5 HT with a 10% or so chance to crit makes this 8-piece bonus next to worthless.

Ideal healing setup is probably 5 piece Dreamwalker and 3 other pieces from BWL/AQ40.

Total materials for Dreamwalker (excluding the BOP items):

100 Wartorn Scraps
6 Mooncloth
34 Cured Rugged Hide
5 Nexus Crystal

great for +healing druids, actually for healing druids in general :d, it got nice +healing, good amount of m5s and it looks the best of all the t3 imo

the bonus are also fairly good:
- 2/9 bonus is just incredibely good, i think that's the best 2/9 bonus of all the t3 sets
- 4/9 bonus is also nice, always nice to get the healing spell a bit more mana reduced, also combined with Moonglow and Tranquil spirit you get a HT & Tranquility (who uses that much anyway) mana reduction of 22%, that's quite a lot, defenitly because it costs a hell load of mana to start with
- 6/9 is a total waste, regrowth is almost never used, only when it's really really necessary to safe somebody
- 8/9 is good if you have some +spellcrit rating, otherwise the proc chance is lower then 10% + you need to spam HT the whole time

Requires Desecrated Armor along with other items to be turned into a quest npc(except the ring).

Desecrated Armor is dropped in Naxxramas off certain bosses.

The following is a list of what boss drops what:

Head-Thaddius
Shoulders-Gluth, Grobbulus, and Patchwerk
Chest-The Four Horsemen
Pants-Loatheb
Gloves-Maexxna
Boots-Gluth, Instructor Razuvious, and Gothik the Harvester
Bracers-Anub'Rekhan, Gluth, and Grand Widow Faerlina
Belt-Gluth, Heigan the Unclean, and Noth the Plaguebringer
Ring-Kel'Thuzad

The other materials are as follows:

Head
15 Wartorn Leather Scraps, 6 Cured Rugged Hides, and 2 Nexus Crystals
Shoulders
12 Wartorn Leather Scraps, 1 Nexus Crystals, and 5 Cured Rugged Hide
Chest
25 Wartorn Leather Scraps, 6 Cured Rugged Hides, and 2 Nexus Crystals
Pants
20 Wartorn Leather Scraps, 1 Nexus Crystals, and 8 Cured Rugged Hide
Gloves
8 Wartorn Leather Scraps, 1 Nexus Crystals,and 5 Cured Rugged Hide
Boots
12 Wartorn Leather Scraps, 3 Mooncloth, and 2 Cured Rugged Hides
Belt
8 Wartorn Leather Scraps, 2 Cured Rugged Hide, and 3 Mooncloth
Bracers
6 Wartorn Leather Scraps, 1 Arcane Crystal, and 2 Cured Rugged Hides

This is the ultimate best looking set in the entire freakin game, i can only wish i'll get this in the future, only sucks that druids have been considered healers only before TBC

Naxx 10 in WotLK drops a recoloured version of this. But obtainable though tokens, and there is a Feral, Resto and Balance set.

This set looks much better imo..

possible for the 2-bonus to stack with http://wotlk.aowow.org/https://vanillawowdb.com/?spell=48539 http://wotlk.aowow.org/https://vanillawowdb.com/?spell=48539  ?

Looking back I can only hope as a Druid they will make set bonuses like these geared towards new content (ie 80), so many of the Resto Druid set bonuses are underwhelming in these times. ex T4 2 and 4pc, T5 2 and 4pc (when the gear was useful), T6 4pc, T7 2pc (post-change).
But, bonus Revitalize procs, reduced mana cost of multiple useful spells, stacking HP bonus on a primary tank heal, though the 8pc wasn't that great (tradition for the end-game set bonus kept with T6).
Though T8 seems to bringing back the good stuff.

In any case T3 is obviously one of the best looking sets in the game and was amazingly designed for us a class (for healing atleast) and seeing more gear that has bonuses like this would be an amazing sight to see in future sets (or even two amazing bonuses on tiers).

Blizzard has all but said that this set, along with all t3, will be available to buy via the Darkmoon Faire, coming in 4.3. I honestly can't wait, cause I'm gonna be transmogging to this set!

If anybody is curious to know what the old stats were I am going to post them here:

Dreamwalker Raiment
1662 Armor
+130 Spirit
+175 Stamina
+205 Intellect
Equip: Restores 35 mana per 5 sec.
Equip: Increases spell power by 252.