You can use Comet of Legend's flight to grow Starsurge to massive proportions.
Comet of Legend allows you to move quickly around the map; use it to put pressure on other lanes.
Save Voice of Light to use as a defense against melee opponents if you need to - otherwise, use its slow to start a fight at long range.
Zilean is fragile if a team focuses on him, but otherwise he's very difficult to kill. Commit to killing him as a team.
If you're able to match Zilean's speed, it can sometimes be beneficial to wait until his ultimate has faded before landing the killing blow.
The stat comparisons provided here highlight several important Aurelion Sol versus Zilean matchup stats that may help you understand the differences and similarities between this set of champions. Aurelion Sol’s KDA ratio ([kills + assists] / deaths) of NaN is better than Zilean’s ratio of NaN, indicating that Aurelion Sol may be more central to his team's team fighting potential than Zilean. This observation is largely a result of the difference in kills.
Aurelion Sol normally has a much larger longest kill spree than his counter does. On average, he receives a similar amount of damage to Zilean. This is usually reflective of differing health capacities, yet it can also illustrate that the one champ has less agility and thus is unable to flee from additional damage when poked or engaged.
Both League of Legends champions are great champions. Both champs have their strengths, weaknesses, and counters. In League's current meta, Aurelion Sol usually wins when taking on Zilean, with a 52.9% win rate. As a result, Aurelion Sol makes a good counter to Zilean.
While Aurelion Sol does have a higher win rate than Zilean, when on opposite teams, Aurelion Sol also has a greater level of difficulty that makes him a more complex character to pick up and master. You don't need to be too worried when picking Aurelion Sol into Zileanas his relative depth means that you may not be able to reach his full potential without a significant amount of practice beforehand.
Moreover, Aurelion Sol has only a small amount of CC and other utility, a similar amount to Zilean. This often makes her just as valuable during teamfights, especially when trying to counter champions with a lot of burst damage.
While there isn't one best champion overall in League of Legends, in Aurelion Sol vs Zilean matchups, Aurelion Sol is the better champion with a noticably higher win rate, more champion depth, and a similar amount of utility to help out your allies during late stage team fights.
Aurelion Sol is a good counter to Zilean. Focus your tactics on increasing your gold and cs and clearing objectives. If you are able to do that, you should do very well as Aurelion Sol against Zilean.
To truly master Aurelion Sol to counter Zilean during both the early game and mid / late game phases of League of Legends, you should continue reading to pick up a few extra tips and tricks for this matchup. If you listen to the build and suggestions displayed above, you should grow your win rate significantly and be that much closer to League of Legends pro players.
Aurelion Sol typically picks up much more CS as Zilean. Champs who on average don't take much CS usualy don't require much CS to be effective, such as support champions. They are capable of scaling properly off of their skills, stats, and first items alone. Yet, champs with large amounts of CS, such as hyper-carries, often need a lot of items to be effective. In either situation, try to surpass the numbers displayed here to do well.
The ideal items to prioritize in your Aurelion Sol versus Zilean build consist of Seraph's Embrace, Rabadon's Deathcap, and Rylai's Crystal Scepter. When Aurelion Sol bought at least these three pieces in his build, he performed a lot better versus Zilean than with many other typical item sets. In fact, Aurelion Sol had an average win rate of 52.9% when playing against Zilean with this counter build.
To have the highest probability of beating Zilean as Aurelion Sol, Aurelion Sol players should take the Arcane Comet, Manaflow Band, Transcendence, Gathering Storm, Magical Footwear, and Minion Dematerializer runes from the Sorcery and Inspiration rune sets. Of all the rune combinations players chose for Aurelion Sol vs Zilean fights, this combo of runes yielded the highest win rate. Notably, these runes averaged a 52.9% winrate overall.
If you would like to get Aurelion Sol versus Zilean tips and builds for a a distinct division, feel free to choose one from the selection menu provided above. By default, the statistics and build suggestions given are calculated using all rounds played with these champs.