Accursed Arms

make a melee spell attack on a target enemy, if the spell hits, the enemy takes 3d12 magical piercing damage, 3d12 magical slashing damage and 6d12 necrotic damage and the enemy must make a spell save or be given the “Decaying” Debuff, this debuff deals 2d6 necrotic damage per turn and prevents the afflicted from being healed or gaining temporary hit points, for 1d4+2 turns, if the melee spell attack crits, the debuff duration is doubled and the target has disadvantage on the spell save