An item path for Aurelion Sol with live gold costs, chosen from what the champion's damage actually scales on.
Riot rates Aurelion Sol at 2 for attack and 8 for magic. That single comparison decides most of the build before any matchup does.
Aurelion Sol wants to land a cooldown for a burst of damage, then be safe and largely useless until it returns, and items are how you buy more of that rather than a little of everything.

Riot rates Aurelion Sol higher on magic than attack, so the build follows ability power.
Massively increases Ability Power
Activate to become invincible but unable to take actions
SpellDamage, MagicPenetration
Health, AttackSpeed, SpellDamage, OnHit, AbilityHaste
Health, SpellDamage, CooldownReduction, SpellVamp
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 Falling Star / The Skies Descend at levels 6, 11 and 16 — the ultimate is always worth the point it costs.
For the basic abilities, Astral Flight (W) 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 | 600 | 2130 |
| Attack damage | 58 | 58 |
| Armour | 22 | 90 |
| Magic resist | 30 | 52.1 |
Movement speed 340 and attack range 550 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.
Full AurelionSol page — abilities, stats and every skin →