A practice/experimenting mode

I was having a conversation with a friend of mine and we thought of a game mode that would be nice to have in league.

• This mode would provide practice where people can test new builds and techniques, practice mechanics, and explore other in-game specifics.
• The cool-downs, item prices, and skill points can also be turn on and off and also be controlled.
• This game mode can assist players uncover new builds, techniques, and runes/masteries that work best for the individual. I hope this game mode can be taken into consideration. It would be -lly nice thing to have in League.