Your Attention Roll lets you spot, hear, or otherwise detect the presence of something. It measures your general awareness of your surroundings and the keenness of your senses. It typically relies on hearing, seeing, or smelling the environment.

When another creature tries to sneak up on you, the Game Master might roll in secret, or a Hidden Roll, as a Contesting Skill Roll to determine if you spot a creature, or group of creatures trying to get the Surprise on you.

Every caster has a range to spot a Hidden creature. This is a passive range of 30ft, as automatically rolled each movement action once per turn from the caster.

However, if you want you can tell the GM you are looking for hidden creatures outside of your passive range (30ft), or you use the ability Spot Hidden Creatures.