Earthquake (アースクエイク Āsu kueiku) is a Dark Magic spell that appears exclusively in TearRing Saga: Utna Heroes Saga. When cast, this spell will cause the surroundings of the current Map to be wrought with violent tremors, as an earthquake is triggered by the caster. A potent spell with unlimited range, Earthquake will afflict every single enemy unit causing them to sustain a fairly large amount of damage, and may only be used during turns divisible by 5. Earthquake is notably the heaviest spell in the game.
To obtain the Earthquake spell, it must be stolen from enemy units.
Upheaval could be considered its predecessor.
Can only be used after turns divisible by 5; Ineffective against Flying Units.