Earthgrab

Earthgrab - Monster attack
Monster attacks Earthgrab is a special attack made by all members of the Earth Elemental race. It is an attack that has immediate bludgeoning damage, and failing a Reflex save will encase the player character in stone, rendering the player character helpless. While held, the earthgrab effect will continue to deal bludgeoning damage over time for 6 seconds.

(Combat): You attempt to save versus earthgrab. (Combat): Monsters earthgrab hit you for bludgeoning damage. (Combat): You are hit by monsters earthgrab. (Combat): You are held in place by the power of the earth. This deals damage over time based on the size of the elemental grasping you.

Monsters with this attack:

 * Earth Elemental race

Earth Grab
This Weapon stores the implacable strength of the earth deep within. When this weapon is used, this power occasionally comes to the surface, calling on the earth to erupt from the ground and hold an enemy in place.
 * 4% chance of Earth Grab encasement
 * Reflex save DC of 35 (As of U12 Freedom of Movement no longer prevents from Earth Grab)
 * Has a duration of 6 seconds, no recurring saves
 * Deals a small amount of bludgeoning damage every 2 seconds (3 tics total)
 * Target is immobilized, and helpless (monsters take +50% damage from all sources.)

Found on:
 * Alchemical Crafting tier 1
 * Ratkiller (level 16 and level 20 tier 3)
 * Green Steel Weapons tier 3

Earth Grab Guard
This item stores the implacable strength of the earth deep within. When the wearer is successfully attacked in melee, this power occasionally comes to the surface, calling on the earth to erupt from the ground and hold an enemy in place.
 * 4% chance of Earth Grab encasement on getting hit by melee attacks
 * Reflex save DC of 35 (As of U12 Freedom of Movement no longer prevents players from being Earth Grabbed)
 * Has a duration of 6 seconds, no recurring saves
 * Deals a small amount of bludgeoning damage every 2 seconds (3 tics total)
 * Target is immobilized, and helpless (monsters take +50% damage from all sources.)

Found on: Earthgrab Guard items
 * Alchemical Crafting tier 1
 * Dragontouched Armor with Sovereign Rune
 * Epic Stonemeld Plate Armor
 * Green Steel Accessory tier 3