Multiattack. The cambion makes two attacks, using Claw or Fire Ray in any combination.
Claw. Melee Attack Roll: +7, reach 5 ft. Hit: 8 (1d8 + 4) Slashing damage plus 7 (2d6) Fire damage.
Fire Ray. Ranged Attack Roll: +7, range 120 ft. Hit: 13 (3d6 + 3) Fire damage.
Spellcasting. The cambion casts one of the following spells, requiring no Material components and using Charisma as the spellcasting ability (spell save DC 14):
2/day each: Alter Self, Command (level 3 version), Detect Magic