Drakor and Lyle moved swiftly while under the cover of the darkness that Lyle had summoned.
Drakor used his earth-sensing the entire time while Lyle used his blood-sensing. Even still, they hadn't come across any monsters yet.
The main reason Londar had gone with Kleagan was that Londar had gained the [ Blood Manipulation ] ability from Lyle, so he was able to sense blood as well, which he was disguising as a small array he had drawn on the palm of his hand.
It didn't have the same area of effect as Lyle's sensing ability, but it would still be enough if they came close to any Necromancers.
Drakor had gained [ Darkness Manipulation ], as did Ruby and the assassin that Lyle had turned.