Mid/top lane AP assassinwtfbbq Tahm.
Just out of curiosity, why NOT play a slightly tanky-ish AP Tahm when he's released? Heck, just for fun, full AP even? Like Lulu, basically.
His base damages are pretty awesome, and his Q and W ratios are pretty good as well.
With a full AP build, we can estimate he'll have around 800 AP. His Devour will deal 68% of the target's max health in magic damage. Seems legit enough for me. And his gooey tongue will be dealing 900ish.
Can't eat them up? Spit out some minions for around 800 magic damage.
I'm gonna give it a shot.
http://static.giantbomb.com/uploads/original/9/93770/2361165-nes_battletoads.jpg