I've been picking him up as my Top lane one trick lately. Anyone been playing him awhile and got tips on how to maximize him? Who does he steam roll? Who in turn counters him hard? What runes are best/worst? Best builds? Looking forward to people's thoughts.
Malph is a great pick into ad laners who want to spank you in lane. 
, bonus points if the enemy comp doesn't have much AP. You generally want to rush 
, if youre still getting bullied in lane finish sunfire, if you are holding your own build into 
from there, malph has high base AD which works well w/ the sheen proc, His W is an AA reset, and the MS/HP help him stay on top of targets.
with this core you will pretty much win any trade vs an AD laner, and you get the nice 20% cdr for more ults.
Of course teamfighting w/ malph is relatively simple, either ult their backline or use ult to peel your team's fed carry.
u need flash and r and thats it mate.go ap if ur team has low dmg and full tank if they have tons
He's also a great counter to tryndamere in addition to the auto attack reliant AD laners mentioned above as he lowers dmg/attack speed or buffs armor whatever .. I just start q then max w and e and you can q for slow run up to them and ult In their face and spam w and e and Chase them with Q's and you will demolish pretty much anyone and can easily tank 5+ tower shots with your sickening 650 armor
A keyboard.
The most important thing as malp is a solid strategic read on the game. While he's supprisingly good 1v1, he's still not really a great splitpusher, especially not later on. Mid to late, he's all about that ult, so it's very important to use it wisely. Going for a solo kill with it can loose you the game if it means you don't have it up for baron/elder.
So haveing a good understanding for when to group and when to fight around what objective is very important on malph, as his kit mostly revolves around that 1 big teamfight ult. This also means you need to know how and then to engage. Simply pressing R when your rnrmirs are grouped isn't enough, it's just as important(if not more) to be aware of your allies. The two most common fails i see on malph(or other hard engage) is either gooing to far with a maxrange flash ult and then wondering that theri team couldn't instantly cross 2 screens to foolow up, or engageing after allies used important CDs and again wondering why there's no proper followup. All this is theoretically basic game knowledge, but for malph it's far ore important than for someone like jax or qiyana, cause he has very little to offer beyond that one ult that makes or breakes a fight and has a rather high CD. Qiyana can fail her ult and still scrap some kills in a split fight or go splitpushing, jax has his entier kit on a ~7sec cd, cause his ult active is a nice to have but not needed to contribute in a fight. Malph has his R every min, and if that doesn't lead to something meaningfull, he'll pay for it while he waits for the CD. Also, never be that malph that only uses his ult to finish of lowhealth units, those are the worst. They end with great KDAs but still lose the game all by them selfs, it's worse than inting...
