Idea for a practice game mode

So the setup is you are ezreal and fixed in the middle of the map. Randomly Teemos with 1 HP spawn and you have to hit them with Ez's Q.

The Teemos spawn at an increased rate over time and there is no cooldown on your Q.

It would help players of all skill levels work on the mechanics and hitting skill shots. This could also have a leader board style competition where it can ethereal be who goes the longest without missing or who can get the most kills in 1 minute.

There are several variations I can think of such as, the Teemos get smaller every time you hit, starting at giant cho'gath size and moving smaller and smaller as time goes on.

Just an idea I had. What do you think