Morph (Ability)

Morph, also known as Metamorphose, is a recurring ability in the Final Fantasy series. Typically, Morph allows the player to turn an enemy into some type of item.

Final Fantasy VI
Although Terra Branford possessed the ability to Morph into her Esper form, this functioned quite differently. The summon Ragnarok, however, allowed players to transform an enemy into one of four items, with varying rates of success. Typically, bosses were immune to this. Some of the rarest items in the game like Growth Eggs and Miracle Shoes, could be acquired easily this way, as the alternative was to fight in the Colloseum.

Final Fantasy VII
The Command Materia Morph could be found in the Temple of the Ancients and turned enemies into items.

Final Fantasy VIII
Quezacotl's Card ability turned enemies into Triple Triad cards. Some rare cards could only be acquired this way. The ability usually failed unless the enemy was weakened and bosses could not be Carded.