The subject of this article is commonly referred to as Power Index or PI.

A Champion's Hero Rating is the number by which a Champion's power is indicated. Mastery points are notorious for lowering a Champion's Hero Rating.

A Hero Rating is increased (or decreased) by a Class Bonus.

Gameplay Terminology

3 vs. 3AbilitiesAllianceAlpha CatalystArenasArmorAttack (action) ● Battle ChipsBlockCalendarCatalystClassClass BonusComboDaily QuestDashDirect DamageDodgeEnergyEnergy RefillEvent QuestFeatured ChampionGateGiftGoldHalloween CalendarHealthHealth PotionHero RatingISO-8Level UpLocationsLoyaltyMarvel: Contest of ChampionsMasteryPowerQuickmatchQuestsRankRank UpReskinReviveSignature AbilityStory EventStory QuestSpecial AttacksSummonerSynergy BonusThe ContestTierTitleUnitsVersusVictory AnimationXP