Blink Dog Warrior

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

Second Wind. The dog can use a bonus action on its turn to regain hit points equal to 1d10 + 12. Once it uses this feature, it must finish a short or long rest before it can use it again.

Improved Critical. The dog's attack rolls score a critical hit on a roll of 19 or 20 on the d20.

Extra Attack. The dog can attack twice whenever it takes the Attack action on its turn.

Battle Readiness. The dog has advantage on initiative rolls.

Indomitable. The dog can reroll a saving throw that it fails, but it must use the new roll. When it uses this feature, it can't use the feature again until it finishes a long rest.

Bite. Melee Weapon Attack: +10 to hit, reach 5 ft., one target. Hit: 6 (1d6 + 4) piercing damage.

Teleport (Recharge 4–6). The dog magically teleports, along with any equipment it is wearing or carrying, up to 40 feet to an unoccupied space it can see. Before or after teleporting, the dog can make one bite attack.