Imhullu

Imhullu, (known as Maph in the Japanese version) is an evil magic used by Gharnef. It seals all attacks (with the exception of Starlight) and thus, makes Gharnef nearly invincible. It appears in Fire Emblem: Ankoku Ryū to Hikari no Tsurugi as well as its remakes Fire Emblem Monshou no Nazo and the new Fire Emblem: Shadow Dragon.

Though according to the story Imhullu makes its wieldier it may be worth note that if the spell is acquired by the player (by means of a game-shark or other cheating device) it will not bestow any protective properties, though it will alter the numbers in the pre-battle screen and say that its welder will acquire no damage, rather or not he/she actually will.

FE1 Stats

 * Type: Magic
 * Attack: 14
 * Hit Rate: 70
 * Critical Rate: 0
 * Weight: 9
 * Uses: 18
 * Weapon Level: --

FE3 Stats

 * Type: Magic
 * Attack: 14
 * Hit Rate: 70
 * Critical Rate: 0
 * Weight: 14
 * Uses: --
 * Weapon Level: 1

FE11 Stats

 * Type: Magic
 * Attack: 14
 * Hit Rate: 70
 * Critical Rate: 0
 * Weight: 4
 * Uses: --
 * Weapon Rank: A
 * Weapon EXP: --

Although this technically doesn't have a magic type, it is most similar to dark spells and has been categorized with them.