This edge represents the combination of GetChanges and GetChangesAll. The combination of both these privileges grants a principal the ability to perform the DCSync attack.
With both GetChanges and GetChangesAll privileges in BloodHound, you may perform a dcsync attack to get the password hash of an arbitrary principal using mimikatz:lsadump::dcsync /domain:testlab.local /user:AdministratorYou can also perform the more complicated ExtraSids attack to hop domain trusts. For information on this see the blog post by harmj0y in the references tab.