The ESL One Birmingham Dota 2 tournament is now underway, and while watching some of the games I noticed new icons above the usual hero abilities in-game.
Specifically, there's a row of 6 new icons or buttons above each hero's QWER skills. The first four icons have numbers next to them which seem to vary from hero to hero. Here's an example I took from a recent game:
What are all of these new icons and what do they mean?