Shadow Mastiff

The shadow mastiff can see ethereal creatures and objects.

While in bright light created by sunlight, the shadow mastiff has disadvantage on attack rolls, ability checks, and saving throws.

Melee Weapon Attack +5 to hit, reach 5 ft., one target. 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.

While in dim light or darkness, the shadow mastiff becomes Invisible, along with anything it is wearing or carrying. The invisibility lasts until the shadow mastiff uses a bonus action to end it or until the shadow mastiff attacks, is in bright light, or is Incapacitated.