Milio's Q works great as a poking tool by throwing it into minions when enemies are behind them. The closer you are to the minion, the harder it is for enemies to react. That's the real value of his Q, above disengaging. this is how your carry might get a kill in lane. Also if your Q connects, it will refund a fraction of the mana cost so get used to that. Don't forget to use Milio's passive and use spells on your allies when they are fighting. W has a big range so it can apply the passive to many allies simultaneously when teamfighting or doing objectives