Magic Resistance. The fiend has advantage on saving throws against spells and other magical effects. Death Throes (Demon Only). When the fiend drops to 0 hit points or the spell ends, the fiend explodes, and each creature within 10 feet of it must make a Dexterity saving throw against your spell save DC. A creature takes 2d10 + the spell’s level fire damage on a failed save, or half as much damage on a successful one.
Multiattack. The fiend makes a number of attacks equal to half this spell’s level (rounded down). Bite (Demon Only). Melee Weapon Attack: your spell attack modifier to hit, reach 5 ft., one target. Hit: 1d12 + 3 + the spell’s level necrotic damage.