Malphite is one of the best tactical tanks in the game if used correctly. He can sustain a lane for a long period of time due to his passive Granite Shield: Shielded by a layer of rock which absorbs damage up to 10% of his maximum Health. If Malphite has not been hit for 10 seconds, this effect recharges. That being said Malphites main problem is his tiny mana pool throughout the game. But with the correct runes you can poke as much as you want and get through those tough early levels by last hitting minions with your Seismic Shard followed by aoeing the whole minion wave with Ground Slam. Lastly Malphites bread and butter is Unstoppable Force. This allows Malphite to never be turret doven or better yet helps Malphite turret dive.

Pros:

Pokes hard
Sustains lane easy
Tanky and can deal good damage
Great for team fights
Anti carry

Cons:

Small mana pool
Not made of metal

Magic Penetration Reds : Takes away early magic resist at level 1 to help you poke better with Seismic Shard.

Mana Regen Per LVL Yellows : Allows for multiple combos of Ult, Ground Slam, Seismic Shard, RUN mid game.

Mana Regen Blues : Allows for early poking and good combination with Dorans Ring to help get through levels 1-5.

Movement Speed Quints : Great early game in combination with Seismic Shard, also unreal for stealing the movement speed of all those champions who are fools for picking speed 1 boots to start.

Pretty Simple Tank Masteries. You need Armor, Magic Resistance, Mana regen and Heath. If you don't you should probably not be Malphite because trust me you want to be meaty and able to poke at level one without running out of mana.

Ground Slam gives half of his armor as damage! I know lets build him tanky, lets give him lots of armor and lots of magic resistance that way he's an actual Unstoppable Force just like his ult says.

Magic Pen Boots: For extra poke damage.

Merc Tread Boots: If the team has three or more cc champions.

Sunfire Cape: For added Ground Slam damage/aoe and if you get it at 13 makes brutal strikes a higher rank than just one, good job for waiting.

Force of Nature: I can't catch that Nidalee or that Zilean guess what I can now. Please hit me with you Spear Throw or Time Bomb.

Randuin's Omen: Please hit me that way I don't need to waste Seismic Shard on you. whats that you want me to aoe slow with it's active then do extra damage with Ground Slam because of all the armor I'm stacking okay!

Frozen Heart: If the team has two or more ad carry's who rely on attack speed plus extra cd reduction will help make up for the reduced poke damage if you picked Merc Treads over Sorc Boots.

Thornmail: Tryndamere you tickle how about you taste what your packing. Also for all you range carrys who iv been picking on take some more damage. Did i mention more armor for Ground Slam?

Gaurdian Angel: Well I can't die anyways so I might as well put a giant ! over my head while I take no damage from anyone on there team. **** I forgot this item had armor GROUND SLAM!

Malphites Moves scale very well if you skip Brutal Strikes until level 13. Why? Let's face it you just wont need it. All Brutal Strikes will do for you is make it harder to last hit minions and make the other team want to poke you because you want to melee hit so bad. If you just alternate Seismic Shard and Ground Slam, you can clear minions waves, push to there turret and sit in a bush allowing your passive Granite Shield to regenerate armor for you.

Pretty Simple, your always going to be faster than your opponent why? Your going to steal there movement speed with Seismic Shard. So if that is the case, why not be faster than there whole team? Seismic Shard there fastest champion, cast Ghost, catch up to there carry, Ground Slam them so there attack speed is reduced then Unstoppable Force before they retreat or cast there ult in defense.

Now For Ignite. Here is the combo for turret dive: Seismic Shard, Unstoppable Force, Ground Slam, Ignite, Seismic Shard then Ghost out. Now depending on who you just dove add some melee hits in there to compensate for whomever you just steamrolled.

Well time to rap it up, ill make it short and sweet. Build Tank, poke hard, run away, go back in and repeat until none are left standing! If you have blue buff make sure they know you have blue buff.

Thanks and Enjoy Malphite the Molten Core Giant.