Thorn Growth

1 inch long, razor sharp thorns grow from your skin covering your body for the duration of the spell.  These spikes give you advantage on checks made to maintain a grapple. 

Creatures who make melee attacks against you take 1d4 piercing damage on a hit for the duration.

Melee attacks you make do an additional 1d4 piercing damage for the duration.

Creatures who start their turn grappled by you take 1d4 piercing damage.

You may dispel this spell on your turn as an action. When you do the thorns are forcefully ejected from your skin, flying 120ft in all directions. Creatures in range take 3d4 piercing damage, half on successful DEX save.