Blood Manipulation: Magokoro

This unique sensory technique was developed in order to hunt Shirvs to great success. 
In order to use Magokoro the user has to cut both hands before slamming them onto the ground. This causes vein-like lines of red chakra to spread around point of impact, pulsating before spreading like a ripple and vanishing at which the technique activates. This technique allows the user to sense the heartbeat of all who are caught within a 50 yard radius, allowing the user to track their exact location. Furthermore, the user can judge a person’s fear by honing in on their heart rate. The volume of blood passing through a sensed heart will also give a indication of how large said target is.  
===Strengths:===
Can even sense those who hide their chakra
===Weakness:===
Far less range than certain sensory techniques
Requires for the user to self-inflict injury in order to sacrifice blood
Can be negated by those who know how to slow their pulse to below 40 bpm