I couldn't miss the chance to practice my drawing!
Multi-targeting is a support ability in the Final Fantasy. Usually spells that have this attribute can have their multi-casting effect toggled, while other spells may forcibly effect an entire party. Multi-targeting differs from the similar group-cast in that the latter is not a support ability, but a gameplay feature.
Most spells can be multi-targeted by having the Materia attached to an All Materia. Mega All makes nearly all spells and attacks multi-target. The multi-targeting attribute can be assigned to command abilities.
Magnify materia is a Support Materia in Final Fantasy VII Remake and Episode INTERmission. It can be linked with Magic Materia to increase the range of spells and allow them to hit all targets. It can be used both with offensive magic materia to hit all enemies, or defensive magic materia to cure or buff all allies.