Blood Wolf

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

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

(Blood) Regeneration. The Blood Wolf regenerates 5 HP at the end of it's turn. This ability can only be used if the Blood Fang Wolf has damaged a creature this combat encounter. 

Multi-attack- The Blood Wolf makes two attacks, only one of which can be a bite attack.

Bite. Melee Weapon Attack: +5 (1d20+5) to hit, reach 5 ft., one target. Hit: 10 (2d6 + 3) piercing damage. If the target is a creature, it must succeed on a DC 13 Strength saving throw or be knocked prone.

Claw Melee Weapon Attack: +5 (1d20+5) to hit, reach 5 ft., one target. Hit: 10 (1d8 + 3) piercing damage. If the target is a creature, roll (2d8 +3)

Transfusion. The Blood wolf leaps into a target 10 ft. from it, healing it for 2 x Hemocraft Die +4 hit points. The Blood Wolf can not use this ability until long rest. 

Blood Flame Breath (2 charges per long rest). The blood wolf exhales a blast of crimson red blood on fire in a 20-foot cone. Each creature in that area must make a DC 15 Dexterity saving throw, taking 11 (3d8) fire and 11 (3d8) necrotic damage on failed save, or half as much damage on a successful one. takes 1d6 damage from using his blood. 

(Blood) Chains of the Fallen. The Blood Wolf let's out a howl and a creature that it targets must make a DC 13 Constitution saving throw or be Restrained. The creature takes 11 (2d10) necrotic damage at the start of it's turn. A creature can use an action to make a DC 13 Constitution saving throw to remove the chains.

(Blood) Howl of the Fallen (1/Day). When damaged the Blood Fang Wolf can use it's reaction to let out a howl. All creatures within 20 ft of the Blood Fang Wolf must make a DC 13 Constitution Saving throw or be Stunned until the start of the Blood Fang Wolf's next turn.