The soaring wraith

The goblin looked up just in time to see the gleaming scimitar before it cut through him, swift precise and deadly, these are the hallmarks of a soaring wraith. You were gifted with wings by a powerful deity so that you may carry out a holy mission or maybe in exchange for a service.

Angel of death

As an action you can grow wings until you dismiss them with another action, while active you have a fly speed of 50ft.

Dive

While in the air you can dive at a creature below you if they are within half of your fly speed, you make a melee attack against that creature which you have advantage on, if you hit the creature it makes a dc 15 dexterity saving throw or is knocked prone. 

Intercept

While in the air you have advantage on attacks made against other flying creatures, additionally as a reaction when any ally in your line of sight takes damage you can move up to half of your fly speed towards them. 

Aerobatics

While your wings are active you don't provoke opportunity attacks.

Reconnaissance

While flying you have advantage on stealth checks and perception checks and your passive perception is increased by 5.