spiked defense

2-level Abjuration

This spell is most often used as a defense against being grappled, especially by a very large creature. When activated, it causes the caster to sprout 3 inch spikes all over his outer body. Anyone holding the caster at this time will take 3d10 piercing damage with no attack roll required.
At higher levels: When you cast this spell using a spell slot of 3rd level or higher, the damage increases by 1d6 for every slot level above 3rd.