Unique Attack Modifier

Unique Attack Modifier refers to special modifiers that alter a Hero's basic attack to provide an additional effect. An example of this is Morbid Mask, which grants the lifesteal effect. Certain Hero abilities are Unique Attack Modifiers, such as Broodmother's Incapacitating Bite. All Items that grant Unique Attack Modifiers are purchased from the Artifacts shop, or the Secret Shop. Not all attack modifiers count as Unique Attack Modifiers.

Priority
Multiple modifiers do not stack; one modifier always takes priority. The order of priority is as follows:


 * 1) Conditional Modifiers - Modifiers that only occur on some attacks and are not controlled by the player, such as Maelstrom (chance-based), Mjollnir (chance-based), and Geminate Attack (cooldown-based)
 * 2) Ability Modifiers - Modifiers granted by Hero abilities*
 * 3) Standard Modifiers - Modifiers granted by items, with the first acquired taking priority

* ''Autocast UAMs, such as Viper's Poison Attack, will only override other modifiers if they are set to Autocast or are Manually cast. If they are Manually cast, they cannot be overridden.''

There is one known exception: Eye of Skadi and Lifesteal can both be active at the same time. (Lifesteal is granted by Morbid Mask, Helm of the Dominator, Mask of Madness, or Satanic.)

Items that Grant Unique Attack Modifiers










Hero Abilities that Grant Unique Attack Modifiers












* ''This modifier can be cast manually or placed on autocast. Using this modifier effect requires mana. If it is cast manually, it can be used to orb walk.''