Looking at your team's build aaaand AP Tryndamere

https://www.youtube.com/watch?v=PgdU-KjESJw

http://www.lolking.net/guides/269009

AP Trynd can work, although you'd be ignoring your passive. The heal scales off AP, and the spin has a 100% AP ratio.

Not even the worst I've seen AP Mundo AP Shyvana

AP trynd is good. Not as ridiculously op as it was pre-nerf, but still good.

Only when that AP builds or other magic pen items. People dont really realize that even though it's scaling off of AP it IS NOT doing magic damage :O

AP Trynd isn't even bad, after the nerfs it's not as op but you can just build for attack speed to get your fury up for your insane heals