My first build hope u like it. at least i found it very effective and good so i thinked that i would publish it to u too. :)

Well runes:

Marks: are for armor penetration and it's always usefull for melee champions.

Seals: are for dodge chance and it's usefull when jungling.

Glyphs: Magic resist bcause trundle have a low one.

Quintenses: are for dodge chance too.

Summoner Spells:

Smite: Must have
Ghost: I found most usefull
Flash: you can replace ghost with this if you want to
Ignite: i wouldn't recommend
Clairvoyance: not needed
Exhaust: Not needed either
Clarity: not for trundle
Heal: u can replace ghost with this but i wouldn't do that
Rally: who uses this??
Teleport: can replace ghost if wanted
Cleanse: not needed
Fortify: not needed
Revive: ...NO!

U start from golem, and then after you killed it you move to wolfs then wraiths and after wraiths you kill lizard, and then again golem if it's spawned. so u try to keep red and blue buff on all the time. And like always try to be all the time ganking when u have buffs.

Pros:
very effective from start to end
great jungler
Troll
awesome ganker

Cons:
Pretty hard to master
And bit expensive

can't find more ;)

And when the build is complete and u have all items need u have good dmg,health,as,armor and dodge. so it's very effective from start to late game. So keep trolling guys and master the build!