Green-Flame Blade

As part of the action used to cast this spell,
make a melee weapon attack against a target
within range, otherwise this spell fails.
On a hit, the target suffers the attack's normal
effects plus 2d8 fire damage, and the fire leaps to another visible creature of the caster's choice
within 5 ft of the original target. This second
creature takes 2d8+5 fire damage.