AD&D 2nd Edition

Sphere: Elemental (Earth)
Range: 120 yards
Components: V, S, M
Duration: 1 round
Casting Time: 1 turn
Area of Effect: 5-foot diameter/level
Saving Throw: None

When this spell is cast by a priest, a local tremor of fairly high strength rips the ground. The shock is over in one round. The earthquake affects all terrain, vegetation, structures, and creatures in its area of effect. The area of effect of the earthquake spell is circular, with a diameter of five feet for every experience level of the priest casting it. Thus a 20th-level priest casts an earthquake spell with a 100-foot-diameter area of effect.

Solidly built structures with foundations reaching down to bedrock sustain one-half damage; one-quarter damage if they score above 50% on a saving throw. An earth elemental opposed to the caster in the area of effect can negate 10% to 100% (roll 1d10, 0 = 100%) of the effect. Other magical protections and wards allowed by the DM may also reduce or negate this effect. If cast undersea, this spell may, at the discretion of the DM, create a tsunami or tidal wave.

The material components for this spell are a pinch of dirt, a piece of rock, and a lump of clay.