Earth Shake (Final Fantasy IX)

Earth Shake is a Blu Mag spell for Quina in Final Fantasy IX that deals Earth damage to all grounded enemies at a cost of 20 MP.
Earth Shake cannot be reflected but works with Return Magic. The enemies to use it are Adamantoise, both versions of Lich, and Shell Dragon.
==Obtain==
Quina learns Earth Shake by eating an Adamantoise, Earth Guardian, and Shell Dragon. The earliest it can be learned is after the party has the Blue Narciss from the Adamantoises around the Qu's Marsh on the southwest island.
==Mechanics==
Earth Shake damages all grounded enemies with Earth damage by the following formula:
:Base = 75 - Target's~Magic~Defense
:Bonus = Magic + Rnd MOD ([(Level + Magic) / 8] + 1)
:Damage = Base \times Bonus
Where Rnd means a random number, while MOD means modulus operation. "Rnd MOD x" can be read as a random number between 0 and x-1.
The bonus part of the calculation is boosted by +50% if Quina is wearing a Twist Headband, Bone Wrist, Gaia Gear, or Germinas Boots. The bonus is halved if Quina is under Mini or the target(s) have Shell.
Earth Shake misses against any flying and floating targets.
==Use==
Earth Shake can do good damage, especially when Quina wears Earth-boosting equipment, but its downside is that it does not work on flying opponents, and all the toughest opponents, including the superbosses and final bosses, fly. Quina could opt to use Twister or Frog Drop against flying opposition. Of the enemies it does work against, few are actually weak to Earth.
The alternative to dealing Earth damage to all enemies is Eiko's Fenrir.
Though Earth Shake is Quina's most powerful damaging ability as per spell power, it pales in comparison to what the other party members' best attacks can do. Quina is better of powering their Frog Drop by playing frog catching, which no enemy can resist or avoid unlike with Earth Shake, or setting themselves up for Limit Glove.
Category:Blue Magic in Final Fantasy IX