Earthquake

Earthquake was an evocation or alteration spell that unleashed a powerful but localized tremor.

Effect
The effect of the tremor depended on the type of terrain it was cast in, so a cavern would collapse and damage those caught in the collapse where heavily damaged. Areas with structures or woods would cause damage to the structures and trees,  and a swamp would have its water drained.

Components
Only vocal and somatic components and a pinch of dust, piece of rock and a lump of clay where needed for the casting of this spell.