OVERLOAD
Durationup to 5 min
TriggerScheduled
Effects
A shared meter fills from everyone's damage (3% of the boss's max HP). If it fills, the boss staggers: all damage x1.5 for 6 s.
Rewards
Everyone who helped fill it gets their ultimate back.
How often
8.9% when a scheduled event is selected.
Source: official game library. Scheduled percentages describe event selection, not the chance per attack.