More Suggestion on Practice Tool
I would suggest adding a few more buttons to the practice tool, like minion spawn by 6 or 7 if pressed 3 times continuously ( and not a toggle on and off for minion spawning). A Spawn Baron and Rift Herald, even doe there is a fast forward 30 sec, you cant get the Herald more than once. I also suggest increases damage for minions or tower that way the situations can be tested as games progresses the minions have more dmg but since in spawn timer counts in it would take a long time.