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.
Make the most out of your Icathian Surprise.
Use Void Ooze to set up a perfect Living Artillery.
Kog'Maw can outrange most champions with his Bio-Arcane Barrage ability.
The Sivir Kog'Maw synergy stats shown here demonstrate the areas of her gameplay that do better (or worse) when paired with Kog'Maw, compared to her overall stats. Significant differences are areas of focus that highlight how her gameplay changes when paired with this other champion.
Overall, Sivir sees a very large drop in her KDA (ratio of kills and assists to deaths) when paired with Kog'Maw. His KDA decreased from NaN to NaN. This negative change shows that Kog'Maw helps Sivir perform worse in ranked LoL rounds. Yet, the small difference shows that this performance change is not very impactful.
When Sivir tries to synergize with Kog'Maw, she sees a small decrease in her full damage output. This could signal that Kog'Maw does not provide cover for her to dish out more damage or that his presence on the team also helps extend the game's duration. Similarly, when Sivir is played together with Kog'Maw on the same side, he usually scores many fewer killing sprees compared to when she plays alone. This is contrasting evidence that she is worse when playing alongside Kog'Maw.
Moreover, when Sivir plays with Kog'Maw on the same side, she on average takes a little more damage than when she fights alone. Taking more damage could indicate that Kog'Maw does a poor job of covering Sivir in team fights.
There is no universally accepted best companion for Sivir that will 100% of the time be her best synergy. However, overall, Kog'Maw is a terrible teammate for Sivir. By being on the same team as Sivir, he lowers their win rate by -8.5% to 39.4%. This clearly indicates that there is a very bad bond between Sivir and Kog'Maw that results in them performing not as well together than alone.
Kog'Maw has a greater difficulty than Sivir. That means Sivir players should be careful when arranging Kog'Maw teammates to play with, as they will require a greater level of skill to be able to cooperate well with you.
When playing on the same side, Sivir players will likely see an overall large increase in your team’s ability to deal physical damage. Combined, these champions should be able to take down targets with auto-attacks and other AD damage abilities.
In contrast, by aligning Sivir and Kog'Maw together, you may not be providing your other allies a lot of engage. Plan to include other champs on your team that neutralizes this relative hole in this pairing's capabilities.
Regardless of your Kog'Maw ally's ability, you need to focus on increasing your gold income, outlasting your enemies, and taking down objectives. If you do this, you will do well, regardless.
If you would like to learn all of the intricacies of Sivir in order to work well with Kog'Maw during both the early game and mid / late game phases of League, you should keep reading to gather a few extra tips and tricks for this champion pairing. If you listen to the build and suggestions displayed above, you should increase your win rate significantly.
The most important finished items to build first in your Sivir and Kog'Maw synergy build include Guardian Angel, Lord Dominik's Regards, and Bloodthirster. When Sivir bought at least these three pieces in her build, she did significantly better when fighting alongside Kog'Maw than with most other commonly used item sets. In fact, Sivir had an average winrate of 39.4% when synergizing her build and playstyle to Kog'Maw with this build.
To have the greatest probability of defeating your oponents, Sivir players should equip the Lethal Tempo, Presence of Mind, Legend: Alacrity, Coup de Grace, Absolute Focus, and Gathering Storm runes from the Precision and Sorcery rune sets. Out of all the runes players picked for Sivir and Kog'Maw pairings, this composite of runes resulted in the top win rate. Notably, these runes gave a 39.4% winrate overall.
If you want to get Sivir with Kog'Maw synergy tips and stats for a a particular player tier, please choose one from the selection menu above. At first, the stats and strategies shown are calculated using every match run with these champs.