Per 
Title: SCP-5390
Object Class: Euclid
Description: SCP-5390 is a small, 5m-5m-8m tall box, of which the contents are unknown. SCP-5390 shall not leave the containment cell, on which it is surrounded by a transparent, 4 meters thick acrylic on all sides.
When the contents of the box are viewed by any person, the person instantly collapses to the floor and starts seizing. When the seizure stops, the person immediately tries to locate the nearest other human beings. When this process starts, the person is now SCP-5390-1. If another human comes into contact with SCP-5390-1, they will seize, and then become another instance. SCP-5390-1 has been shown to have a hive intelligence, where the more there are in a group, the smarter they become on to approach the next human.
Testing with Class-D personal has concluded that if SCP-5390-1 views the contents of the box again, it collapses and seizes again, and becomes more aggressive and hostile. This process can happen three times. The following stages are:
Stage 1: This is when the person views the contents of SCP-5390 for the first time and becomes SCP-5390-1.
Stage 2:
