Choas smite

You channel chaos energy in a melee weapon with a 5-foot reach for the duration of a minute. ( every weapon strike can then be manipulated by metamagic)

the spell does 2d8 damage choose one of the d8 to select a damage type  from the list below

If you roll the same number on both d8s, the chaotic energy triggers a wild magic surge and you roll on the wild magic surge table.