Adder's Kiss

You briefly conjure a small venomous serpent that flies toward a creature within range. The target must succeed on a Constitution saving throw or suffer 5d6 points of poison damage and be poisoned for one minute. If the saving throw is successful, the target suffers half as much damage and is not poisoned.

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