Damage Syphon

MP Rage (ダメージアスピル, Damēji Aspiru^?, lit. "Damage Asper"), translated as Damage Syphon in Kingdom Hearts Birth by Sleep, is an ability that appears in Kingdom Hearts, Kingdom Hearts Final Mix, Kingdom Hearts II, Kingdom Hearts II Final Mix, Kingdom Hearts Birth by Sleep and Kingdom Hearts 3D: Dream Drop Distance. It restores your Magic Points, or MP, when damage is taken. The greater the damage taken, the more MP restored. In Kingdom Hearts Birth by Sleep, it restores the Focus Gauge, instead. It costs 2 AP in Kingdom Hearts and Kingdom Hearts Final Mix, and 3 AP in Kingdom Hearts II and Kingdom Hearts II Final Mix.

Learning MP Rage

Sora learns MP Rage at levels 33 and 51 with the Dream Rod, 36 and 66 with the Dream Shield, and 57 and 66 with the Dream Sword.
Donald learns MP Rage at levels 20 and 40.
Goofy learns MP Rage at levels 39 and 45.
Jack Skellington has MP Rage as a default ability.
Ariel has MP Rage as a default ability.
The Beast has MP Rage as a default ability.

Sora learns MP Rage at levels 42 and 75 with the Dream Rod, 63 and 87 with the Dream Sword, and 90 and 100 with the Dream Shield.
Donald learns MP Rage at levels 19 and 49.
Goofy learns MP Rage at levels 39 and 57.
Jack Skellington has MP Rage as a default ability.
Ariel has MP Rage as a default ability.
The Beast has MP Rage as a default ability.

Sora learns MP Rage at level 41 with the Dream Shield, 53 with the Dream Rod, and 99 with the Dream Sword; and by leveling up Wisdom Form to level 4.
Donald learns MP Rage after defeating Demyx at Olympus Coliseum.
Goofy learns MP Rage after defeating Shenzi, Banzai, and Ed in the Elephant Graveyard.
Auron has MP Rage as a default ability.
Simba has MP Rage as a default ability.
The Hidden Dragon has MP Rage as its Equipment Ability.
The Shaman's Relic has MP Rage as its Equipment Ability.
The Save the King+ has MP Rage as its Equipment Ability.

Sora learns MP Rage by leveling up Wisdom Form to level 4.
Limit Form has MP Rage as a default ability.
Donald learns MP Rage after defeating Demyx at Olympus Coliseum.
Goofy learns MP Rage after defeating Shenzi, Banzai and Ed in the Elephant Graveyard.
Auron has MP Rage as a default ability.
Simba has MP Rage as a default ability.
The Hidden Dragon has MP Rage as its Equipment Ability.
The Spell's Relic has MP Rage as its Equipment Ability.
The Save the Queen+ has MP Rage as its Equipment Ability.
The Nobody Guard has MP Rage as its Equipment Ability.
The Save the King+ has MP Rage as its Equipment Ability.
The Shade Archive+ has MP Rage as its Equipment Ability.

Damage Syphon can be attached to a type B or type F Command recipe through Command Melding, either randomly or by applying a Soothing Crystal.

Damage Asper can be obtained by spending 300 Link Points on Ursa Circus's Ability Link.