Corki

Corki is the least marksman-like marksman on the roster. His autos hit hard because Hextech Munitions adds flat true damage to every one of them, but the bulk of his threat comes from Missile Barrage: a pool of missiles that quietly fills while you farm, with every third shot a Big One that hits considerably harder.

He is a resource management champion. Your game is spent deciding when to spend charges and when to let them accumulate. Add a Valkyrie that pulls you out of a collapse or opens a firing line, and a Gatling Gun that chews through armor tick by tick. Corki has no button that erases a positioning mistake, but he has the luxury of killing people without ever stepping forward.

His first strength is that his ultimate outranges his own attacks by a wide margin: you punish a retreat, you steal a minion under tower, you finish a target that thought it was safe. Gatling Gun gives him a second identity in a scrum, because the armor shred it applies benefits your entire team. Phosphorus Bomb reveals an area, which quietly solves stealth champions and unwarded brush.

The downsides are real. His autos alone do not carry a long fight once the missiles are gone, his early mana drain is brutal, and Valkyrie is a long, readable flight rather than an instant escape. An opponent who waits out your Valkyrie kills you the second you use it.

Play the first levels with autos and Hextech Munitions, not with Phosphorus Bomb. Mana decides your first ten minutes, and a bomb thrown at a wave is a trade you will not be able to make two minutes later. Save the bomb for moments where you actually need vision: a suspicious brush, an opponent who vanished, a river you cannot see.

The moment your ultimate comes online, the lane changes shape. You can poke from a distance nobody can answer, provided you do not dump the whole stock at once. Fire one or two missiles, let the recharge run, and always keep enough to follow up on your support's engage. Never spend Valkyrie to move onto a wave: it is your only way of surviving a dive.

The first spike is mechanical rather than financial: it is the moment your missile stock is full. A Corki holding every charge can throw out a complete sequence without ever entering auto range, which wins river skirmishes your team assumed were lost.

The second spike is Trinity Force. It solves three problems at once: mana, movement speed that makes Valkyrie less mandatory, and a charged hit after every spell. Corki is one of the few marksmen who genuinely converts it, because his spell cycle is short. Infinity Edge behind it turns lukewarm autos into a real threat, and Last Whisper comes in the moment the enemy front line starts buying armor.

Stand further back than other marksmen do, because your ultimate reaches from there. Open fights at missile range without committing, and watch who the enemy front line decides to dive. As long as Valkyrie is up you have an answer; once it is spent you are an immobile carry.

When the fight collapses inward, Gatling Gun becomes your best spell. Aim the cone at the tanks rather than the enemy carry: armor shred smeared across a whole front line produces more team damage than a couple of extra autos on a fleeing target. Keep a charge or two of Missile Barrage for the end of the exchange, when the survivors peel off beyond everyone's range except yours.