Bloodhound's White Raven Skill
Honestly, this skill is cool but is often distracting. There's also a few problems with it. For one, the raven can spawn on high places that Bloodhound cannot reach on their own, or they flat out spawn under the map, which the only way to use the raven in these places, is to use the tactical scan, which gives Bloodhound away and has a cooldown which is better spent not being used right away.
An example of the problem:
