Rend

Rend is a Secondary skill.

In-game
Rend counts as a Bleed effect, delivering 220% damage per tick for 5 seconds. Critical Hits are impossible to be scored through using Rend, but it does gain additional attack power through a ratio dependent on the Barbarian's Critical Hit Chance/Damage stats.

Applying Rend multiple times to a single monster will only stack if these Rends have different runes, or come from different Barbarians, so spamming Rend quickly will not yield any damage boost. Even if the damage type is changed, Rend will still count as Bleed.

Runes

 * Changes damage type to Fire and increases the radius to yards.
 * The Barbarian will heal of his/her maximum Life per tick for every enemy bleeding.
 * Changes damage type to Lightning and increases damage to per tick ( total).
 * Changes damage type to Cold and Rend Chills enemies by, also making them take extra damage from all attacks for the duration.
 * If an enemy (even an Illusionist affix illusion) dies before the bleeding runs its full course, it will cause all enemies within yards to suffer from bleeding as if they were hit by a normal (unmodified) Rend. The bleeding effects triggered this way will not generate new Bloodbath procs, but it does stack with the skill itself, applying as a separate damage over time effect (so the same foe may have both Rend and Bloodbath at the same time).

Non-rune enhancements

 * Lamentation (Legendary Mighty Belt): Rend deals 100-150% more damage and can stack twice on the same target. Only applies to damage: other effects will act as if there was only one stack.
 * Ambo's Pride (Legendary Mighty Weapon): attacking with also applies Rend, and total damage of Rend is dealt over 1 second.
 * Wrath of the Wastes Set (Set Bonus for 2 items): increases Rend damage per second by 500% and the duration to 15 seconds.
 * Wrath of the Wastes Set (Set Bonus for 4 items): while channeling and 3 seconds afterwards, triples damage per second of ongoing Rend effects and reduces damage taken by 50%.
 * Wrath of the Wastes Set (Set Bonus for 6 items): damage increases by 10,000%.