- Effect type
Defiant is an effect that grants immunity to most control effects. It is caused by Unshakable, an ability possessed by most champion and legendary rank enemies.“
Immune to crowd control. Crowd control skills remove stacks of Defiant.
— In-game description
When a creature with Unshakable ability spawns, it will gain Unshakable effect. When successfully affected by a control effect, the creature will gain a minimum of 3 stacks of Defiant, but potentially many more depending on how many players are nearby, based on event scaling. Stacks of Defiant can be removed with additional control effects, and once all stacks are removed, the creature is vulnerable to control effects once again, and the cycle repeats. When no stacks of Defiant are present, a control skill CAN apply control to the creature, but it will also apply Defiant, preventing further crowd control from being applied (until they're removed). For example, interrupting will have no effect unless no Defiant is present; if no Defiant is present, the creature can be interrupted but this will immediately apply more Defiant.