Diana's jungle clear is very healthy and fast with the new passive changes. Start on either buff, bot lane leach for fastest clear. Full clear into scuttle spawn, back if no lanes gankable. When going from camp to camp remember to Q E over walls to get to the next camp as fast as possible.

Don't be afraid to demolish the enemy jungle as well. Diana can get in and out very fast so if you see the enemy jungle on the other side of the map go take his camps.

Diana has no CC so taking scuttle can take longer than usual but once Nashor's Tooth is finished you can take every camp in an instant.

Diana is best when ganking a lane with CC so that you can land Q then E W in. When they flash you can follow with your second E cast. If you are cleaning up a 1v1 you can jump in with E and W Q to finish them off. If they are just out of E range you can Q E a minion near them then E W to finish them off as well.

In team fights Diana can quickly access the back line carries with E W R Q Zhonya's which should destroy the squishies and buy your team enough time to engage after you. Once you are out of Zhonya's you can clean up.

I have found that the best item to start with for jungle Diana is Nashor's Tooth. The huge attack speed and AP are perfect to proc your passive often in the jungle and deal massive damage. Then go into your Mythic item after you finish Nashor's Tooth.

For boots I almost always take Sorcs unless against a full AD or AP team in which case I would take Steelcaps or Mercs but if you don't take sorcs you must get Magic Pen somewhere else Void Staff.

Diana is a very versatile champ that can make do with most AP items and can switch it up depending on what the enemy comp is.

Diana destroys towers so when you kill their jungle and midlaner in a 2v2 make sure to bust down those tower plates. You can easily take off 2 plates, summon rift herald, knock down 3rd plate and rift herald will destroy the last 2 plates for easy first tower.

Diana can also tower dive pretty well since you can use your 2nd E charge to dash to an enemy minion to get out and W will protect you while under tower. Plus if you have Zhonya's you can transfer tower agro.

Diana takes objectives very quickly especially Rift Herald since auto attacks make the eye appear faster. Dragons are also super fast and safe with W.

Not only does Diana have a super fast Level 6 time due to her fast clear. She also scales very well. You will never become useless and fall off when you pick the right runes/items for the game. Diana is a great team fighter, and sieger. You can easily carry the game by farming up and destroying after Level 6. Once you come online at 6 and get your Nashor's Tooth + Sorc Shoes you might as well be at end game because it is over for he other team.

Diana is not the best in 1v1's especially pre 6. You can gank and take objectives that are free but it is best to wait until you finish your first item before going all in. Which shouldn't take very long.