Darkvision allows a creature to see in non-magical darkness within a specified range (usually 60 feet) as if it were dim light (lightly obscured, disadvantage on Perception checks), and in dim light as if it were bright light. It only sees in shades of gray in darkness, and cannot see in magical darkness

 fire resistance is a damage-mitigating property that reduces all incoming fire damage by half, rounded down. It acts as a defensive buff against spells like fireball, dragon breath, and environmental hazards

, Necrotic Resistance allows a creature to take only half damage from spells, effects, and attacks that deal necrotic damage (rot and decay)