Tox's Poison Arrow

A poisonous green arrow streaks toward a target within range and bursts into a cloud of poison. Make a ranged spell attack against the target. On a hit, the target takes 4d4 poison damage immediately and 2d4 poison damage at the end of its next turn. On a miss, the arrow creates a cloud of poison around the target with poison for half as much of the initial damage and no damage at the end of its next turn.

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