While channeling this spell, you gain 60% of your total mana over 8 sec.
For those trained to draw on its power, the wellspring of magical energy is limitless.
Evocation is a mana regenerationutility spell that allows a mage to recover mana very quickly, even in battle. Evocation is great if you run out of drinks. The spell is channeled over 8 seconds; the mage cannot take another action, else the channeling will be interrupted, as with all channeled spells. Any damage taken (excluding active DoTs) may reduce the channeling time, which in turn reduces the amount of mana gained. "Evocate" is often used as a verb; to evocate is to channel the Evocation spell.
Evocation restores a fixed amount of mana based on the mage's total mana pool, including all current buffs and gear which increase this total. Mana is restored at a rate of 15% of the mage's total mana every 2 seconds, for a total of 4 ticks over 8 seconds, or 60% mana in total.
Evocation is excellent for longer fights, such as PvE raid boss encounters. This spell reduces the mage's need for a large mana pool, allowing him to focus his gear on other areas such as damage output.
Items in the weapon slots (main hand, off hand and wand) can be swapped while in combat. The amount of mana restored on each tick is based on the current maximum mana. Swapping weapons to ones with high intellect, thus raising the maximum mana value while evocating can increase the amount of mana restored. This can be accomplished with a macro, or with an add-on that does it automatically.
A damage shield such as Ice Barrier or Power Word: Shield will prevent loss of channeling time from damage. However, using Mana Shield may be questionable, as the amount of channeling time saved from the shield may be negated by the mana consumed by the shield. Icy Veins will prevent the channeling time lost too.
With the Glyph of Evocation you regain 60% of your health during your evocation channel, which can really help in tough situations and reduce downtime.