Magic Plus %

Magic Plus % is a recurring support ability in the series. It typically increases the user's Magic stat by a certain percentage, ranging from 3% to 50%, for a maximum of 100% when stacked.

Final Fantasy VII
Magic Plus is accessible via the appropriately named Magic Plus materia, starting at Magic +10% at Level 1 and going up to Magic +50% at max level, up to a total of 100% when stacked together.

Final Fantasy VIII
Mag +20%, +40%, and +60% are all abilities that must be equipped beforehand to use. Mag +20% and +40% can be learned on the Gfs Siren, Quezacotl, and Diablos, while Mag +60% is learned on the GF Bahamut. They can also be taught to any GFs by using the items Circlet, Hypno Crown, and Royal Crown respectively.