Invisible Stalker
Invisible Stalker
"You'll never see them coming"
Vital statistics
Species  Extraplanar entity
Age Immortal 
Status Active
Physical attributes
Height N/A
Weight N/A

This is a creature hailing from the elemental plane of air. Typically the only time they are on the mortal plane is when they are summoned by a magic user for a specific task. A invisible stalker will follow what ever command the summoner ask of it, even if it involves traveling hundred of thousands of miles in order to achieve it’s goal. It will never stop until its task is completed, or it is banished back to the plane of air. In addition, it should be noted that it will follow the summoner’s every command during this time. These creatures resent complexed tasks and protracted mission, and will seek to twist and warp the summoner’s command in every possible way. They seem to be just a ball of air, as using a see invisibility spell will only reveal the faint outlines of a cloud and a see true form spell will only show a cloud of gas. Being an entity from the plane of air, they will attack by creating single sudden, intense blast of air to try and crush their target. When they have received enough damage to be killed on this plane, they simply retreat to the plane of air. If they are attacked again there though, they can be killed.