Diamond Dust (special attack)

Diamond Dust is a Special Attack in Kingdom Hearts Unchained χ / Union χ.

Vexen B

Diamond Dust (ダイヤモンドダスト, Daiyamondo Dasuto^?)
Rarity	Description	Damage							Target	Gauges	SAB
Rarity	Description	○○○○○	●○○○○	●●○○○	●●●○○	●●●●○	●●●●●	Max SAB	Target	Gauges	SAB
5★	Raises Speed and Magic-based DEF by 1 tier for 4 turns. Moderately recovers HP. Inflicts more damage the more turns have passed.	x1.55 - 2.75	x1.61 - 2.81	x1.67 - 2.87	x1.73 - 2.93				All	1	—
6★	Raises Speed and Magic-based DEF by 1 tier for 4 turns. Moderately recovers HP. Inflicts more damage the more turns have passed.	x1.61 - 2.81	x1.67 - 2.87	x1.73 - 2.93	x1.79 - 2.99	x1.85 - 3.05	x1.91 - 3.11	x3.82 - 6.22	All	1	3
7★	4 turns: ↑ S-DEF & M-DEF by 1. HP recovery LV 2. Inflicts more damage the more turns have passed.						x7.07 - 8.27	x14.14 - 16.54	All	1	3

Origin

Diamond Dust is a signature attack of Vexen, first used during his boss battle in Kingdom Hearts Chain of Memories.