At the beginning of the game. You will want to waste no time. Buy your starting items and run straight to the river to control the vision with your single ward granted. Depending on what side you started and what side the enemy started, your intuition comes into play as you will have to know if the Master Yi is gonna start at his red...if thats the case you ward the river behind your blue, recall, get oracle lens and go take your own red.

In this hypothetical situation, you run straight to his blue with your oracle lens ready and you just take it as your own. With the updates to 539