Malphite
Let’s Rock
Lane harassment and consistent damage output.
Sorcery
Empowered abilities and resource manipulation
Arcane CometDamaging a champion with an ability hurls a damaging comet at their location.
Manaflow BandHitting an enemy champion with an ability permanently increases your maximum mana by 25, up to 250 mana.
After reaching 250 bonus mana, restore 1% of your missing mana every 5 seconds.
TranscendenceGain bonuses upon reaching the following levels:
Level 5: +5Ability Haste
Level 8: +5Ability Haste
Level 11: On Champion takedown, reduce the remaining cooldown of basic abilities by 20%.
ScorchYour first damaging ability hit every 10s burns champions.
Resolve
Durability and crowd control
ConditioningAfter 12 min gain +8 Armor and +8 Magic Resist and increase your Armor and Magic Resist by 3%.
OvergrowthGain permanent max health when minions or monsters die near you.
Adaptive Force
+9
Adaptive Force 
Health Scaling
+10-180 Health (based on level)
Why Arcane Comet
Arcane Comet paired with [Q] max poke on Malphite allows you to poke for high amounts of damage early in the laning phase to pressure out your opponent.
Why Manaflow Band
Manaflow Band allows you to keep up your [Q] lane poke. The guaranteed hit means you will quickly stack the rune quest to full for maximum mana sustain.
Why Transcendence
Transcendence allows you to stack massive amounts of Armor and CDR on Malphite white also gaining the benefit of the bonus AP when over-capped.
Why Scorch
Scorch doubles down on your lane harass and poke with [Q] max. The extra bit of burn damage combined with Comet can set you up for kill pressure at level 6.
WhyConditioning
Conditioning allows you to scale in to the mid game as a massive front-line tank. Paired with Malphite's natural bonus armor you'll be nearly unkillable.
WhyOvergrowth
The bonus health granted from Overgrowth synergizes well with your massive armor stacking, making you incredibly difficult to kill.
They Will Lose
Lane harassment and consistent damage output.
Resolve
Durability and crowd control
Grasp of the UndyingEvery 4s your next attack on a champion deals bonus magic damage, heals you, and permanently increases your health.
Shield BashWhenever you gain a shield, your next basic attack against a champion deals bonus
adaptive damage.- Conditioning
After 12 min gain +8 Armor and +8 Magic Resist and increase your Armor and Magic Resist by 3%.
- Overgrowth
Gain permanent max health when minions or monsters die near you.
Sorcery
Empowered abilities and resource manipulation
- Manaflow Band
Hitting an enemy champion with an ability permanently increases your maximum mana by 25, up to 250 mana.
After reaching 250 bonus mana, restore 1% of your missing mana every 5 seconds. - Transcendence
Gain bonuses upon reaching the following levels:
Level 5: +5Ability Haste
Level 8: +5Ability Haste
Level 11: On Champion takedown, reduce the remaining cooldown of basic abilities by 20%.
Adaptive Force
+9
Adaptive Force Health Scaling
+10-180 Health (based on level)
Why Grasp of the Undying
Grasp on Malphite allows you to trade effectively with auto attacks in lane. Each point of health is especially important/strong on Malphite thanks to having so much natural Armor.
Why Shield Bash
Shield Bash synergizes well with Malphite's passive and looking to trade with empowered autos from [W].
Why Conditioning
If you manage to make it through the early game, Conditioning's bonus resists make a monster and incredibly difficult to kill in the mid game.
Why Overgrowth
Overgrowth's bonus health scales incredibly well with Malphite's natural Armor stacking. Each point of health you earn from Overgrowth is that much stronger thanks to your resists.
WhyManaflow Band
Manaflow Band allows you to consistently harass in the lane phase with [Q] thanks to the point-and-click proc.
WhyTranscendence
Malphite's natural build consists of a lot of Cooldown Reduction items and Transcendence allows you to overcome any fear of over-capping CDR. The extra bit of AP you'll get from over-capping is welcomed.