Universal Sense

Universal Sense (万能感知) is an Extra Skill and one of the Intrinsic Skills of True Dragons.

Abilities
Universal Sense allows for the perception of nearly all things within a wide radus. It includes an enhanced Magic Sense, along with all kinds of sensory abilities, allowing the user to perceive light, sound, smell, and heat in an extremely wide radius.

This ability allowed Rimuru to detect Gazel Dwargo and his Pegasus Knights approaching Tempest way before a spy like Souei who is known for his superior ability to gather information.