Spoilers for PLA
During Volo's Boss Fight Giratina is summoned and he has the unique status condition Terrible Might to indicate that it's going all out unlike Alpha Pokemon which are buffed due to rage.
What I want to know is how much stronger does Giratina get while under the effects of Terrible Might? I have tried to look around to see if anyone has found the stat buff but I have found nothing mentioning how much stronger Giratina gets.
During the battle against Giratina at the Temple of Sinnoh, it will be filled with Terrible Might, which has an identical effect to Wild Might.
Wild Might [...] increases all of a Pokémon's stats, independently of in-battle stat boosts, and reduces damage from status conditions and splinters, such as from Stealth Rock.
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