Alastor´s weird ray

You hold both your hands forward and create a multicolour ray of wild magic. Make a ranged spell attack against the target. On a hit, it takes (1d6)d6 damage determined randomly (1d4):

1 fire

2 radiant

3 cold

4 piercing

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