The Exponential Multiplier of Equipment Resonance
*Resonance Stones* bestow global percentage multipliers to your hero (e.g. +8% Max HP and +5% Total ATK) whenever every piece in your equipment grid attains a uniform tier.
Practical Advice: Always distribute your *Upgrade Stones* evenly across weapon, helm, armor, and boots before ever trying to over-level a single piece.
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