Not Updated For Current Season
This is my first crazy build of trundle, i will trate trundle as a Offtank-jungler.
First you can buy ||1 Cloth Armor|| and ||5 RED POTIONS|| you should try golems, use smithe and fortify to get bonnus damage against neutral monsters, after that go critical wolves and kill them, your next target its phantom family, use smithe to kill the father and use red potions to get high your hp. After that you should go to the other critikal wolves, come back to base, recharge your mana, and buy ||Madred RAZORS||. Go to the mana buff golem, Red buff lizzard and go base again to get ||Wrigless Lantern|| and ||Bersekers Graves||.
Now you are ready to get ganks in mid and solo lanes, get the Dragon and continue jungle, doing ganks and pushing towers with no defense, put ||Shigt Wards|| for map control [DO NOT FORGET IT] When you are ready to get ||Trinity Force|| came to base again, now you are a monster dude, enjoy it.
Use fortyfy if your turrets are in danger, do not dube it...
In my oppinion Zilean is one of the best solo lanes and you will take 8% extra exp + 3 quintessences +2 (+6) and the mastery points in exp +5%.... you gains a total of 19% OF EXTRA EXPERIENCE!!! it amazing in my opinion :S
You should take ||Sunfire cap|| and ||Thornmaill|| If you fight against twich, trynda etc...
Or ||Vanshees Veil|| and ||Guardian Angel|| against Ryze, fidle etc...
I hope you will enjoy this Off tank build, forgive my english (is not my native language xD)