Resto shamans are amazing raid healers, with capacity to tank heal if no paladin are present in the raid, their totems bring great utility, and bloodlust/heroism. Usually since there are no enhancement or elemental shamans in the raid there is always at least one resto shaman per raid group.

Stats for Resto Shaman Wotlk

Stat priority

Spell Power > Haste (1350) > Crit > Intellect = MP5

Resto Shaman Stats Overview

Spell Power

Spell power increases the amount of all the healing.

Haste

Haste reduces the global cooldown and increases the speed of the casts up to one second, the global cooldown is always one second, 1350 is the maximum advised value for haste because of this.

Critical Strike

Crits return mana via [Improved Water Shield], this reduces the amount of MP5 required, while increasing the healing output.

Intellect

Increases the mana pool, MP5 (Replenishment), spell critical chance and with [Nature’s Blessing] the bonus healing by 15%.

MP5

MP5 stands for mana per 5 seconds while casting, however as mentioned above critical strike refunds mana of one water shield orb, reducing the value of MP5.

Stats Breakdown without increasing effects

33 hit rating ≈ 1% to hit

33 expertise rating ≈ 1 expertise

33 haste rating ≈ 1% haste

45 critical chance ≈ 1% critical

1 stamina ≈ 10 Health

1 intellect ≈ 15 mana

1 agility ≈ 1 attack power

1 strength ≈ 2 attack power

1 critical chance ≈ 84 agility

14 Armor Penetration ≈ 1% Armor ignore