Urchin's Spines

A willing creature that you touch sprouts clusters of 3-inch long purple or black spines along its entire body. Any time a spined creature is the target of a melee attack, a spell with a range of touch (not including this one), or an ability that requires touching the spined creature, the targeting creature takes 1d6 piercing and 1d6 poison damage. Creatures affected by this spell have disadvantage on all Charisma checks besides Intimidation checks.

At Higher Levels. When you cast this spell using a spell slot of 3rd level or higher, either the piercing or poison damage (you choose) increases by 1d6 for each slot level above 2nd.