From DDO Compendium

Spell Earthquake Icon.png

Level: Druid 8
Cost (Spell Points): 45
Components: Somatic, Verbal
Metamagic: Embolden, Empower, Enlarge, Heighten, Intensify, Maximize, Quicken
Range: Standard AOE
Target: Foe, Positional, Breakable
Duration: 30 Seconds
Cooldown (Seconds):  4
Save: Reflex save for half damage and negates knockdown
School: Evocation
Spell Resistance: No

D&D Dice: Deals 2d6 level bludgeoning damage.

Description: Summons an earthquake beneith your enemies' feet. Enemies within the area of effect have an additional 30% spell failure change, and every three seconds they are knocked down and take 2 to 16 points of damage. A successful reflex save vs the damage halves the damage, and a reflex save vs the knockdown negates it. The earthquake lasts for 30 seconds. Flying enemies are immune.