We haven't reached the group stage but Dries Mertens just scored UCL Goal of the Year
Scoring with a volley from the top of the box straight off a corner kick is one of the game's most audacious tactics. It's pure poetry when it comes off (David Beckham to Paul Scholes, anyone?), but its execution requires pinpoint service and the perfect finish. The margin for error is minuscule, and if either the corner or volley isn't flawless, then you're simply hoping the shot flies into Row Z and you're not getting torn apart on a counter going the other way.