Im not really sure what happened to your masteries... if you go utility, please max out one mastery instead of putting into two evenly. 2/4 is hardly as efficient as 4/4. even if you miss out on the other mastery. I like the build except for the boots. The whole point of trundle was to be an anti CC champ, so it only makes sense to build merc treads on him. I understand that you were going for a DPS trundle, so zerk makes sense. That being said, I still disagree with zerks. zerkk grieves on a melee champ in the current metagame is awful because he will be CC'd like there is no tomorrow. Even on my ranged carries i rarely go zerk grieves. Just some food for thought. Also, your description is half***ed. I suggest going back and doing it again.

Good build against tank carrys.