An item path for Kha'Zix with live gold costs, chosen from what the champion's damage actually scales on.
Riot rates Kha'Zix at 9 for attack and 3 for magic. That single comparison decides most of the build before any matchup does.
Kha'Zix wants to delete one target and leave, which makes target selection matter more than the fight, and items are how you buy more of that rather than a little of everything.

Riot rates Kha'Zix higher on attack than magic, so the build follows attack damage.
Massively enhances critical strikes
Grants Attack Damage, Life Steal and Life Steal now overheals
Tons of Damage
Health, Damage
Overcomes enemies with high health and armor
Gold costs are live from the current patch. Order depends on the game — buy resistances when you are being punished, damage when you are not.
Take Void Assault at levels 6, 11 and 16 — the ultimate is always worth the point it costs.
For the basic abilities, Leap (E) gains the most from being ranked: its cooldown falls by 8 seconds between rank 1 and max, which is the largest improvement in the kit. That is the usual argument for maxing it first.
This is reasoning from the cooldown data, not a win-rate ranking — a matchup that punishes you can invert it.
| Stat | Level 1 | Level 18 |
|---|---|---|
| Health | 643 | 2326 |
| Attack damage | 60 | 60 |
| Armour | 32 | 103.4 |
| Magic resist | 32 | 66.9 |
Movement speed 345 and attack range 125 do not grow with levels — they are the two numbers that stay true all game.
The list above is what the champion scales on. The order you buy it in is decided by the game — resistances when you are being punished, damage when you are not.
These are the designers' words, not ours — the tips shipped in the client for Kha'Zix.