Skill failure

To cause a skill to fail, the skill must be prevented from completing. Most skills have an activation time during which the character prepares the skill. If a character is caused to fail during skill activation, the skill is disrupted, although this is not technically considered an interruption from a game mechanics perspective. Skill failure has three properties:
 * 1) The skill has no effect.
 * 2) The skill's cost (energy or adrenaline) is forfeited.
 * 3) The skill does not need to recharge (unless it has been disabled) and can be used again immediately, unlike a skill that was actually interrupted.

Causes

 * Certain Assassin attacks have prerequisites to work. If these are not met, the attack will result in a fail.
 * The target dies before the completion of the skill.
 * Certain skills like Spell Breaker or Mark of Subversion.

Related articles

 * Disable skills quick reference
 * Action prevention skills quick reference
 * Interrupt
 * Interrupt skills quick reference