Become Crab

You utter a series of phrases of unimaginable power, occasionally broken up by finger clicking and swaying side-to-side. As you do so, a burst of energy springs from your fingertips and a single creature you touch must succeed on an intelligence saving throw or assume the form of a crab. Only unwilling creatures must make this saving throw. This spell lasts for fourteen years, and the only way to end this spell prematurely - unless ended by the caster - is by way of a Wish spell. Any creature that gets crab'd by this spell also becomes able to understand and communicate with crabs. 

This spell cannot be dispelled by spells such as Dispel Magic.