Reaction Boost

Reaction Boost (リアクションアップ) is an ability that appears in Kingdom Hearts II. It increases the amount of damage done by Reaction Commands.

Mechanics
In Kingdom Hearts II, Reaction Boost is a that costs 2  to equip.

Kingdom Hearts II

 * Sora learns Reaction Boost at level 15 with the Dream Sword, 23 with the Dream Shield, and 33 with the Dream Rod.
 * The Guardian Soul has Reaction Boost as its equipment ability.

Kingdom Hearts II Final Mix

 * Roxas learns Reaction Boost at the beginning of the Third Day in Critical Mode.
 * Sora learns Reaction Boost at level 15 with the Dream Sword, 23 with the Dream Shield, and 33 with the Dream Rod.
 * The Guardian Soul has Reaction Boost as its equipment ability.