Luck Plus %

Luck Plus % is a recurring support ability in the series which is one of the rarest abilities in the games that it appears in. It generally boosts the Luck stat of the user, ranging anywhere from +10% to +50%, to a cumulative maximum of +100%.

Final Fantasy VII
Luck Plus is found only on the appropriately named Luck Plus materia, which can only be found once throughout the game, at the Temple of the Ancients. At Level 1, it grants Luck +10%, but at maximum level, it grants Luck +50%. It can be stacked with another mastered Luck Plus materia for a 100% increase to Luck.

Final Fantasy VIII
One of the rarest abilities in the game, Luck +50% cannot be taught to any GFs Jumbo Cactuar, Tonberry King, and Eden.