Thermal Beam

An ultrathin jet of pure explosive energy flies from your pointed finger to a target within range. Make a ranged spell attack against the target. On a hit, the target takes 1d10 Piercing damage as the beam passes through them. The beam then explodes, forcing everybody within a 20 foot radius centred on the target to make a Dexterity saving throw. The target automatically fails this saving throw. An affected creature takes 4d8 Fire damage on a failed save, or half as much on a successful one.

Note: It is HIGHLY recommended to use this against targets hiding behind cover, while targeting the cover.

At higher levels. At higher levels, the explosion deals 1d6 more damage for each level above second.