Thanks for your advise. I've made some arrangements on my build and i fixed them as you said. Actually I've played with this build and this is better than the other one. One last thing about this build if your teammates are dying so much in early game dont make leviathan. If the game is goin well for you get the leviathan and kill 'em All :) btw I'm a huge Metallica fan :)

Just checking out your new build and everything looks pretty good except a few critical points:

Boots of swiftness are nice to move around in but I believe Mundo is very susceptible to CC. A stunned/slowed Mundo is a dead one. That is why every game I go with Mercury treads, for their magic resist and CC reduction. This stacks nicely with Burning Agony giving you about 50% or more CC reduction late-game and your Visage which also gives MR.

Also, I don't believe your masteries should even touch the support tree. Your masteries should reflect your overall build: If you are building Mundo Tank then you should have defensive masteries, dps then go into offensive... but Mundo is never a support hero. He doesn't need the mana regen, gold per sec and monster buff increase that your masteries give. He would benefit much more from the crit, Improved exhaust, armor pen and %5 percent more phys/magic dmg!

thats my bad i fixed it :)

Doesn't SunFire Cape Not Stackable anymore? o.o

+1 dude i had 17-3-11 game in twisted treeline. This build is cool. and really fun to play.