Allows you to use Steal.Description
In "Episode INTERmission", Yuffie starts with a steal materia already equipped.
Steal materia grants the Steal ability, and does not level up and allows a chance to steal items from an enemy. The success of a steal is calculated using the user's Luck attribute and the given steal rate of the enemy's item.
The steal chance increases by x1.5 with every failed steal.
Steal materia is useful to equip, though it is important to know which enemies have an item to steal. The Assess Materia can reveal enemies that hold useful items. Though there are useful items to steal in a variety of cases, steal materia is only worthwhile if the player has a spare materia slot, as the ability itself is only useful in a few circumstances.
In "Episode INTERmission", most of Yuffie's weapons have the Thievery passive ability that unlocks the Mug command, which can be used without the steal materia equipped, thus making steal largely redundant. However, there are almost no good items worth stealing, anyway. Yuffie can also unlock Steal Success Rate Up to improve her steal rate.