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Good up-to-date resource

http://elitistjerks.com/f79/t102918-enhancement_cataclysm_beta_changes_updated_9_21_10_a/

This article discusses the cata changes for enhancement shammies:

http://wow.joystiq.com/2010/04/07/cataclysm-class-changes-enhancement-shaman-analysis/

Still in beta, so much can and will change yet.

doc, your guy just posted something new yesterday which looks interesting as well

http://wow.joystiq.com/2010/09/26/totem-talk-enhancement-shaman-changes-for-patch-4-0-1?icid=sphere_blogsmith_inpage_wowinsider

I'm only gonna have 1 alt in cataclysm and I think shammy will be the one. I really like some of the changes.

another article

http://wow.joystiq.com/2010/10/09/totem-talk-enhancements-path-to-victory-in-patch-4-0-1/#continued

calculator

http://wowtal.com/#k=ffq.a5o.shaman.

Basic to-do regarding gear:
hit cap (hit talent removed) hit rating 446 -> expertise rating 140-> stack agility

basic totem set
strength, windfury, searing, healing/water

Glyphs:
feral spirit, lava lash, windfury or stormstrike

Major change in spell rotation:
Improved lava lash + searing stacks on target added to normal maelstorm rotation -> use lava lash on every cooldown, dont wait for debuff stacks

not really promising

http://wow.joystiq.com/2010/11/01/totem-talk-post-patch-enhancement-shaman-still-waiting-for-buff/#continued

apparently blizzard agrees. Well doesnt help now, but something to look forward too... lets hope


Shaman (Forums / Cataclysm Talent Calculator / Beta Skills/Talents)
Enhancement

* Windfury Weapon now deals 125% weapon damage when Unleash Elements is used, up from 40%.

http://elitistjerks.com/f79/t110295-enhancement_unleashing_elements_cataclysmic_discussion/

Priority Abbreviation Meaning
1 ST Searing Totem (with x ticks remaining, set in sim)
2 LL Lava Lash
3 FS_UEF Flame Shock if the Unleash Flame buff is present
4 MW5_LB Maelstrom Weapon x5 stacks + Lightning Bolt
5 UE Unleash Elements
6 SS Stormstrike
7 ES Earth Shock
8 SW Spirit Wolves

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Reforging Guidelines

Since Agility is not a stat that can be reforged to, you want to free up as many sockets for Agi gems as possible. As such, reforging for Expertise and Hit caps is ideal, rather than gemming for them.

After achieving caps, reforge to as much mastery as you can. Depending on the values of Agi and Mastery, this is very much subject to change.


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Rockbiter Weapon

Rockbiter Weapon -- No you're not seeing things, this imbue provides the shaman with both damage reduction and increased threat generation. This is not to imply that shamans are to tank in Cataclysm, however it is nice in a pinch. If you're in a 5 man and you have an extra weapon in your bag, it doesn't hurt to have it pre-imbued and have a macro to swap it into your OH if you need to save a healer.

http://wow.joystiq.com/2010/12/14/totem-talk-enhancement-shaman-guide-to-cataclysm-reputation-gea/#continued

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The high-priority list

Your priority zone choices for leveling for maximum reputation gain from 80 to 85 should be Hyjal, Deepholm, Uldum. Vashj'ir's Earthen Ring affiliations are lackluster, and Twilight Highlands' only benefits are its heightened experience rewards.

Once at 85 and running dungeons, you'll want to run Therazane to Revered > Ramkahan to Revered > Guardians of Hyjal to Exalted > Therazane to Exalted > Earthen Ring to Exalted > Ramkehan to Exalted >>> Dragonmaw / Wildhammer to anything ... all while grinding your Tol Barad dailies. Good luck, and enjoy your friends with benefits!

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Apparently, enhancement shamans been overpowered in pvp and I missed that? :P After they removed bloodlust from arena some major utility nerfs.

- I like the change to tremor totem, even though it seems like a nerf. Its a global cooldown to spend, then again I got time for that when chain feared :P
- Change to hex puzzles me abit. 8 sec is really not alot, but I guess its fair.
- Purge nerfed... well, I will have to spam it twice that often now.
- Flametongue weapon change is certainly a good idea, so enhancement doesnt go for spell power weapons anymore. I just dont know what that means in term of raid dps, since enhancement shaman wont piggyback on spell caster buffs anymore.


Nerfbat *bonk*


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Shaman (Forums / Cataclysm Talent Calculator / Beta Skills/Talents)

* Chain Heal’s effectiveness has been increased by approximately 10%.
* Hex now has a PvP duration of 8 seconds.
* Purge now dispels a single effect instead of two.
* Tremor Totem has been redesigned. The totem is now usable under Fear, Charm, or Sleep effects, and pulses much more rapidly, but lasts 6 seconds and has a 1-minute cooldown.


Elemental Combat

* Earthquake damage has been increased by approximately 10%.


Enhancement

* Flametongue Weapon damage now scales from attack power instead of spell power (for Enhancement shaman only).
* Purge no longer has its mana cost reduced by Mental Quickness.


Restoration

* Cleansing Waters no longer fires its heal effect twice when a shaman removes a Magic and a Curse debuff with a single cast.
* Deep Healing (Mastery) has been increased to 3% per point, up from 2.5%.
* Greater Healing Wave mana cost has been increased by 10%; healing done has been increased by 20%.
* Mana Tide Totem has been redesigned. The totem no longer multiplies the Spirit of those affected by it. It instead gives a flat amount of Spirit equal to 400% of the casting shaman’s Spirit, exclusive to short-term Spirit buffs affecting the shaman when the totem is dropped.

shaman patch note discussion

http://wow.joystiq.com/2011/01/11/patch-4-0-6-ptr-shaman-patch-notes/#continued

Noooooooooo....

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Shaman (Forums / Cataclysm Talent Calculator / Beta Skills/Talents)

* Flametongue Weapon procs now deal roughly 20% less damage.
* The Windfury Weapon proc can now trigger 3 additional attacks, up from 2.