Chimera Hell Hound

Keen Hearing and Smell. The hound has advantage on Wisdom (Perception) checks that rely on hearing or smell.

Pack Tactics. The hound has an advantage on an attack roll against a creature if at least one of the hound's allies is within 5 feet of the creature and the ally isn't incapacitated.

Bite. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 7 (1d8 + 3) piercing damage plus 7 (2d6) fire damage

Scratching Slash. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 7 (1d8 + 3) piercing damage plus 7 (2d6) fire damage.. 

Breathless Walk. Hell Hound and up to eight willing creatures within range teleport your bodies into the Ethereal Plane. Your physical form can freely travel through the Ethereal Plane and can pass through portals there leading to any other planes. If you enter a new plane or return to the plane you were on when casting this spell, your body and possessions are transported with you, allowing you to re-enter the plane with everything you had before. Any damage or other effects that you had applied to your body have no effect once you pass in or through the hells plane nor do they persist when you return to it.

Roll a d20 at the end of each of its turns for the duration of the spell. On a roll of 5 or higher, the hell hound will vanish from your current plane of existence and flash through the Ethereal Plane, and when the spell ends if you are on the Ethereal Plane, you return to an unoccupied space of your choice that you can see within 10 feet of the space you vanished from. If no unoccupied space is available within that range, you appear in the nearest unoccupied space (chosen at random if more than one space is equally near).

Bite. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 7 (1d8 + 3) piercing damage plus 7 (2d6) fire damage

Scratching Slash. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 7 (1d8 + 3) piercing damage plus 7 (2d6) fire damage.. 

Fetch. Describe or name an object that is familiar to you. If the object is in motion, you know the direction of its movement. They can locate a specific object known to you, as long as you have seen it up close--within 30 feet--at least once. Alternatively, they can locate the nearest object of a particular kind, such as a certain kind of apparel, jewelry, furniture, tool, or weapon.

Beast Bond. You establish a telepathic link with one Hell Hound you touch that is friendly to you or charmed by you. Until the spell ends, the link is active while you and the Hell Hound are within line of sight of each other. Through the link, they can understand your telepathic messages to it, and it can telepathically communicate simple emotions and concepts back to you. While the link is active, the beast gains an advantage on attack rolls against any creature within 5 feet of you that you can see.

All Seeing Eye.They can see and hear a particular creature you choose that is on the same plane of existence as you. The target must make a Wisdom saving throw, which is modified by how well you know the target and the sort of physical connection you have to it. If a target knows you're casting this spell, it can fail the saving throw voluntarily if it wants to be observed.