Sivir's Boomerang Blade returns to her after reaching the max range, so you can shift position to hit enemies who would otherwise have evaded it.
Try saving Spell Shield for enemy abilities that can disable you such as stuns and roots.
Ricochet resets Sivir's basic attack timer on activation, so activating this immediately after landing a normal basic attack will maximize damage output.
Get boots early when playing against Syndra, they'll help you avoid many of her spells.
Attack Syndra after she's used Scatter the Weak, it has a long cooldown so she'll be vulnerable.
At max rank Syndra's spells gain bonus effects and change in appearance.
The stats shown here show several influential Sivir versus Syndra counter stats that may help us appreciate the distinctions between this set of champs. Sivir’s KDA ratio ([kills + assists] / deaths) of NaN is more than Syndra’s KDA ratio of NaN, highlighting that Sivir may be more central to her team's team fighting effectiveness than Syndra..
Sivir normally has a slightly smaller longest killing spree than her foe does. On average, she takes a similar amount of damage to Syndra. This often reflects differing health capacities, but it can also hint that the champion with increased health has less agility and thus is not able to kite away from additional damage when poked or engaged.
Both League of Legends champions are great. Both champs have their pros and cons. In the game's current meta, Sivir usually fairs equally well when facing off against Syndra, with a 49.8% win rate. Thus, Sivir makes an ok counter to Syndra.
While Sivir does have a lower win rate than Syndra, when facing one another, Sivir also has a much lower learning curve that makes her a less time consuming champion to learn. You should be careful when picking Sivir into Syndra.
Furthermore, Sivir also has only a small amount of CC and other utility, a similar amount to Syndra. This often makes her just as valuable during teamfights, especially when trying to counter champions with a lot of burst damage.
While there is not one best champion in League of Legends, in Sivir vs Syndra matchups, Syndra is the better champion with a similar win rate, less champion complexity, and a similar amount of utility to help out your allies during late stage team fights.
Sivir is a somewhat poor counter for Syndra. Focus your tactics on keeping up your CS and clearing objectives. If you can do that, you should hold your own as Sivir against Syndra.
If you would like to truly master Sivir in order to counter Syndra during both the laning and mid / late game phases of League of Legends, you should keep reading to pick up a few extra lessons on this matchup. If you listen to the build and stats displayed here, you will increase your win rate by a lot and be closer to League of Legends pro players.
Sivir usually accumulates a similar amount of CS as Syndra. Champions who on average don't take much CS often don't require much CS to be effective, such as sup champs. They are able to scale properly off of their skills, stats, and first items alone. Yet, champions with large amounts of CS, such as hyper-carries, typically need several high cost items to be effective. In either case, try to do better than the values shown here to do well.
The most important items to focus on in your Sivir versus Syndra build include Lord Dominik's Regards, Phantom Dancer, and Navori Quickblades. When Sivir combined at least these three items in her build, she did significantly better when fighting Syndra than with many other common item sets. In fact, Sivir boasted an average win rate of 49.8% battling Syndra with this counter build.
To have the best probability of coming out on top against Syndra as Sivir, you should use the Lethal Tempo, Presence of Mind, Legend: Bloodline, Coup de Grace, Biscuit Delivery, and Magical Footwear runes from the Precision and Inspiration rune sets. Out of all the rune builds players picked for Sivir vs Syndra matchups, this composite of runes yielded the best win rate. In fact, these runes gave a 49.8% win rate overall.
By default, tips, statistics, and builds on how to beat Syndra as Sivir are shown for all ranked divisions. To narrow the stats and builds to an individual player tier, you may use the selection menu located above.