During Grand Assault, when allied team applies BUFF effects, deal DMG to a random enemy equal to 548.01% of Captain's ATK and 1 Toughness Reduction.
If the player experiences stack overflow due to gaining BUFF effects, the DMG dealt is increased by 50%.

Whenever the RIDER provides BUFF effects to other allied teammates, the next Ultimate Energy cost is reduced by 1, up to 2 reduction maximum.

When the RIDER is Siro, all allied teammates' DMG +9.4%, and when dealing Counter Damage, DMG is additionally increased by 20%.