Focus (PSP).

Black Mage - LOCK
Lowers one foe's evasion.

Focus (シェイプ, Sheipu?, lit. Shape), also known as LOCK and Focus1, is a Black Magic spell found exclusively in the original Final Fantasy. It is a level 1 spell that can be bought for 100 gil at Cornelia. It costs 3 MP in the Gameboy Advance and later versions and lowers an enemy's evasion by 10 with an accuracy of 64. It can be used by the Black Mage, Black Wizard, Red Mage, Red Wizard, and Ninja job classes.

The spell is bugged in the NES version and always misses. Water Naga is the only enemy to utilize the spell.