Metamorphosis



Metamorphosis is a 31-point talent in the Demonology tree of Warlocks.

The form has the following two abilities:
 * Demon Leap (Instant, 45 sec cooldown): Leap through the air and slam down on all enemies within 5 yards of the target area, causing 2214 to 2624 (at level 85) Shadow damage and stunning them for 2 sec.
 * Immolation Aura (Instant, 30 sec cooldown): Ignites the area surrounds you, causing 566 (at level 85) Fire damage to all nearby enemies every 1 sec. Lasts 15 sec.

Description
When you learn this talent all demonic spells are learned automatically and added to the Demonology tree of the spellbook. It's shapeshifting, like Shadowform, and can't be dispelled.

While shapeshifted, the demon-form warlock can be banished. Demon-form is also susceptible to Turn Evil and grants an auto-crit on Exorcism but is immune to enslave demon.

Also you speak Demonic instead of your normal language.

Utilization
Metamorphosis can be used for AoE grinding by picking up a bunch of Mobs an then using Immolation Aura.

In PvP, it's only advisable when fighting in a one-on-one situation (primarily against rogues), as in a brawl, a big, black and horned demon is the favorite target for everyone.

Of course, Metamorphosis can also be used as a flat damage boost for 30 seconds.

An interesting fact you should notice about this is it reduces your chance to be critically hit by 6%, which is just above what you need to be uncritable by a raid boss. Coupled with the 600% armor increase and taunt it makes this an option for lock tanking bosses that primarily use spells. The lack of avoidance enhancements in addition to the fact that demon form only lasts for 30 seconds makes it somewhat dangerous to tank very hard and fast-hitting melee bosses. This can be useful against the Blood Prince Council as a range tank.

Inspiration
Metamorphosis is adapted from the iconic demon hunter ability of the same name, and is visually based on Illidan Stormrage's demon form.

The demon form does use a model extremely similar to Illidan's from the Black Temple.

Trivia

 * Metamorphosis is considered [form:2] in macros.
 * At one point, warlocks in demon form could be enslaved.