Echolocation. The plumard can't use its blindsight while deafened.   Keen Hearing. The plumard has advantage on Wisdom (Perception) checks that rely on hearing.   Sunlight Sensitivity. While in sunlight, the plumard has disadvantage on attack rolls, as well as on Wisdom (Perception) checks that rely on sight.   Undead Fortitude. If damage reduces the plumard to 0 hit points, it must make a Constitution saving throw with a DC of 5 + the damage taken, unless the damage is fire, radiant, or from a critical hit. On a success, the plumard drops to 1 hit point instead.   Spider Climb. The plumard can climb difficult surfaces, including upside down on ceilings, without needing to make an ability check.   Turn Resistance. The plumard has advantage on saving throws against any effect that turns undead.   Blood Frenzy. The plumard has advantage on melee attack rolls against any creature that doesn't have all its hit points.