In Kingdom Hearts Union χ, Fiery Beat is a special attack that targets all enemies. It costs 6 special attack gauges to perform. For 1 turn, it raises either Player's Power-, Speed-, or Magic-based strength by 7 tiers, lowers targets' Power-, Speed-, or Magic-based defense, and Upright- or Reversed-based defense by 7 tiers, depending on the Medal's attributes. It lowers targets' general defense by 5 tiers, raises Player's special attack bonus by 60%, fills 3 special attack gauges, and ignores counters. It inflicts more damage against a single enemy.
Fiery Beat +6 additionally raises either Player's Upright- or Reversed-based strength by 3 tiers for 1 turn, depending on the Medal's attribute, and raises special attack bonus by 80%.
Learning Fiery Beat
Kingdom Hearts Union χ