Gold for wards. Better wards. More health to stay alive and place wards. You will want lots of wards.

I chose these to help me stay alive and place wards and also to buy more wards because you want to be all about the wards.

You need gold and wards. Boots so you can catch up with their oracles and place a ward in front of him.

Buy Oracles as needed, but use instantly to keep the slot free for more wards.

These work ok. Neither are as good as a well placed ward.

Honestly I can't think of any cons. You'll be able to place wards until the internet goes down.

Pros: This is the best way to get a lot of wards.

ONE SLIGHT CON: Some people might sarcastically cheer the other team for killing your wards, but that just means you're doing your job.

Keep calm and keep warding the same spot.

OK, so this is the pro as heck way of playing Janna.

Once you have boots and 2x GP10, you can just put wards everywhere. Be sure to keep everything warded. Caution: if you run out of wards, something might happen in the game, so try to avoid that. Always buy more wards.

Don't worry if the other team has a Tanky Malphite with Oracles, just keep placing wards. Your goal is to simply out last the other team and/or the internet connection. You can be sure not to lose.

Honestly this is world class, just try it.

Some people would say you should get aura items to help your team initiate, but what do they know?

You'll have enough wards for a half hour baron dance, I promise.