Grind is a Venus Utility Psynergy, that costs 2 Psynergy Points and is used to "Pulverize large objects," namely certain large, brown, stones. This skill is enabled when an Adept equips the the Grindstone which is acquired from King Hydros after he explains how the absence of Alchemy has caused the world to dissipate. The Grindstone can only be equipped to a Venus Adept, meaning, currently, only Isaac and Felix can use Grind. This Psynergy is required to get from the eastern sea to the western sea through the Gondowan Cliffs. Other mentionable uses of this skill are to access the deeper portions of Treasure Isle and exiting the Sea of Time much faster.
The Lost Age