Hello, fellow summoners! This is my jungle build for Master Yi, I feel it is sustainable, resembles glass cannon builds and has some durability just to keep you strong. This build is a fairly cheap build compared to others, and has the ability to wipe enemies out in seconds. But beware, this is a build suited for me, and my style of play as master yi, but please feel free to perfect my build through comments.

For runes I take 3 Quintessences in desolation, for penetration for those in later game.
Since this is a jungle build, I take 9 seals in resilience to have good armour.
I take 9 marks of Furor as critical strikes benefit me when I play yi, with his ultimate he speeds up in attack, and critical strikes can help this ulti for much quicker kills.
I take 9 glyphs in alacrity, the reasons for this are because end game, yi will have a alot of attack speed, and the even greater attack speed and marks of furor, work really well together for my style of play.

this build gives insane life steal, and when infinity edge is bought, gives the ability to solo baron nashor, so the rest of your team do not have to. If you don't feel like getting cloth and 5 pots, you can always get a vampric first and then cloth, ignoring pots, yet I feel this is trickier and you're more susceptible to dying against red or blue.After baron nashor has been solo'd or group killed, or when you are beginning to slow down the jungling far into the game, replace wriggles with last whisper, this brings up armour penetration and damage, giving even more damage output to enemy champions, but perhaps making it harder to take baron down, yet with the amount of lifesteal, you'll be fine.

Smite is a 99% must, if you think you can do without, go ahead, but it isn't quite as easy. There isn't a need more movement or attack speed spells so I'd recommend not getting them. For a second spell i'd get flash, so that you can escape when your ulti is on cooldown. If you don't want flash, get heal, heal can assist you in the jungle and in team fights later in the game.

Pro's-
Great burst of damage
Good ganker
Life steal and damage output so great
Doesn't need meditation with all the life steal
can go back to full health when on less than 100 in 15 hits

Con's-
Squishy
not incredibly helpful to other champions in great team fights
when you've ganked badly you are likely to die

Overall, this build gives you the ability to burst damage all over, whilst maintaining health, it gets master yi into fights fast, he attacks brutally and he kills quickly.

Remember

This is a build suited for me, it may not suit you personally but it works wonders for me.
Feel free to comment and share your opinions in comments.

Thankyou for reading