So hi, this is my first build and i hope that it will help you:) at first i don't like jungling... maybe it could be good way to lvl up, maybe it is faster but i don't like it:) so take your friend(stuner ftw!), go to bush and wait for first blood:)

I chose atack speed because it work great with tigers active. evasion because of monkeys agility and bonus from masteries, magic resist because it is just great(not at start but after you will be happy for any damage reduction) and some health is good every way(+ for atmas impaler)

Simple.Atack because you are dmger. Def because be more tanky is good everytime:)

I start with lifesteal for more time at line because turrle don't give you enought hp at begin.

Boots
Are chosen by situation. a lot of stuners(magic resist)/a lot of casters(magic resist or speed 3)/a lot of melee(dodge+ armor) or just normal team(atack speed)

Warmog and atmas impaler
Love this items. give you some dmg and make you a lot harder to kill.

Bloodrazor
tiger speed+ runes+boots of speed +4%hp/hit+normal dmg. this do some serious dmg.

Bloodthistster
If you don't die a lot like me this is in my opinion yours best choise. farm some mobs and that will give you more lifesteal and more dmg.

Trinity force
The cherry at top of the cake. it will give you more mana= more dancing=pocs of shen= more dmg and it will give you every stats that you need.

I know it isn't cheapest build but if you will complete it...
...it will be a slaughter!

I upgread mainly bear and tiger to save you some mana to dance. Don't know why but i don't like pheonix. Maybe it is good skill maybe it is the best but i prefer tiger.

It is just start of this i will rework it just want to know your opinion on this