Ignite helps you get kills early game so you feed faster.
Flash for survivability when your Q is on CD.

Other choices (Exhaust,Ghost maybe Cleanse or Telleport)

Not so good choices

Revive - are you Troll or wut ??
Heal - U NUB !!
CV - give me 64 reasons why to get that
Clarity - No
Rally - F*** NO
Fortify - are you support ?
Smite - you are not jungler !!!!

Start with Doran shield is good so you can hold on lane longer.
Madred's Bloodrazor is good to get at early game coz you wont be very tankish at start thats why you better get some dmg.
Latern help jungle , gives life steal and armor and some dmg -> every thing you need (without AS xD)
Mercury's Treads gives you CC reduction + magic resistance and of course MS.
Hexdrinker gives you magic resistance and some dmg and of course AWESOME shield who can save you many times(Don't say anything before you try it)
Wit's End gives you magic resistance and bonus 48 magic dmg every hit + passive ( every hit it extent you magic resistance to max four stacks)
And of course the last item Guardian Angel that gives you great magic resistance,armor and revive after death.

Marks for Attack speed to make your items more effective(Madred's Bloodrazor,Wit's End & etc.)
Seals for armor for more survivability so you don't need to spend gold or change build for health items
Glyphs for magic resistance for more survivability just like armor but versus casters

Defense based 8/22/0
Core things i get are ( DMG reduce , Attack speed , Health and Dodge )

PROS

Easy solo baron late game(with some of that items)
Good survivability late game
Giant DMG with full build ( who is not very expensive )
Good Jungle

CONS

Easy frag early game
Only around 2k Health
Not the best DMG early game

Its very usefull if you start at bottom lane so you can start with golems just go as soon as possible and start stacking Jack in the Box's as most as you can before they spawn,when you kill them you'll need 1 more enemy creep to lvl up so youll have 1 bonus lvl before every one who play on lane. Then after you get Bloodrazor you can go jungle if you want.

You got Latern and around 2 hits per second..............want more info ?

Solo Baron easy and very hard to kill.
And almost forgot FRIKIN INSANE DMG!!!!
Yep think that's all.