Trinity Bolt

You shot out 3 bolts of lighting at a single target doing 1d6 Lightning damage 1d6 radiate damage and 1d6 fire damage.

At Higher Levels. When you cast this spell using a spell slot of 3rd level or higher, you can target one additional humanoid for each slot level above 2nd. The humanoids must be within 30 feet of each other when you target them.