Please explain to me the yellow line in pvp.
If you click on an ability at the bottom of your screen, you can drag it to the target you want to hit.
That shows up in PvE too. That line shows up when you drag your finger from one of your heroes to an enemy. I never use it, but I suppose it’s a slightly streamlined version of tapping your hero and then the enemy.
Whoops, got Ninja’d