Try to get the Ancient Golem buff to counteract Riftwalk's increasing Mana cost.
Kassadin's ultimate has many uses and is on a shorter cooldown than most, use it often.
Kassadin has multiple item paths; he can go caster via Mana and Ability Power or anti-caster with Cooldown Reduction and Magic Resist.
Watch Rumble's Heat bar carefully. If you see him Overheat, go in for the kill while his skills are disabled.
Rumble deals almost entirely magic damage. Build some Magic Resistance to reduce his damage.
Rumble's ultimate can deal a lot of damage if you stay inside the area of effect. When you see the missiles falling, move out of the way as quickly as possible.
The stat comparisons provided here underscore several valuable Kassadin against Rumble counter statistics that may help you interpret the differences between this pair of champs. As an example, Kassadin’s KDA ratio ([kills + assists] / deaths) of NaN is more than Rumble’s ratio of NaN, highlighting that Kassadin may be more central to his team's team fighting capability than Rumble..
Kassadin usually has a similar longest killing spree as his matchup does. On average, he takes a similar amount of damage to Rumble. This often reflects differing health capacities, but it can also show that the one champ has less mobility and thus is not able to flee from further harm when engaged or poked.
Both LoL champions are great. Both champs have their pros and cons. In League's current meta, Kassadin usually fairs equally well when trying to fight Rumble, with a 50.8% win rate. Thus, Kassadin makes an ok counter for Rumble.
While Kassadin does have a higher win rate compared to Rumble, when on opposite teams, Kassadin also has a lower difficulty level that makes him a less time consuming champion to learn and master. You should be careful when picking Kassadin into Rumbleas his relative depth means you may not be able to unleash his full potential without a significant amount of practice beforehand.
Furthermore, Kassadin has some amount of CC and other utility, a similar amount to Rumble. This often makes her just as valuable during team fights, especially when facing champions with a lot of burst damage.
While there isn't a single best champion overall in League of Legends, in Kassadin vs Rumble matchups, Kassadin is the better champion with a similar win rate, less champion complexity, and a similar amount of utility to help out your teammates during team fights.
Kassadin is a decent counter to Rumble. You will do well by focussing your play on increasing your gold income and clearing objectives. If you can do that, you should be able to stand on your own as Kassadin against Rumble.
If you would like to truly master Kassadin in order to counter Rumble during both the early game and mid / late game phases of League of Legends, you should keep reading to gather a few extra tips and tricks for this matchup. If you pay attention to the build and stats displayed above, you should increase your win rate significantly and be closer to League of Legends pro players.
Kassadin most often picks up a similar amount of CS relative to Rumble. Champions who typically don't acquire many minion kills often don't need much CS to be valuable teammates, such as support champions. These kinds of champions are able to scale properly off of their skills, stats, and first items alone. Yet, champs with a lot of CS, such as hyper-carries, usually have to have a lot of items to be effective. In either situation, try to do better than the numbers displayed on this page to do well.
The most crucial items to focus on in your Kassadin versus Rumble build include Luden's Tempest, Seraph's Embrace, and Zhonya's Hourglass. When Kassadin used at least these three pieces in his build, he did significantly better vs. Rumble than with most other common builds. In fact, Kassadin had an average winrate of 50.8% battling Rumble with these items in his kit.
To have the greatest probability of beating Rumble as Kassadin, you should equip the Electrocute, Taste of Blood, Eyeball Collection, Ultimate Hunter, Presence of Mind, and Legend: Tenacity runes from the Domination and Precision rune sets. Of all the rune sets that we analyzed for Kassadin vs Rumble matchups, this order of runes yielded the best win rate. Moreover, these runes averaged a 50.8% winrate overall.
If you would like to get Kassadin x Rumble tips and matchup stats and build suggestions for a a specific skill level, feel free to select one from the selection menu above. If viewing for the first time, the stats and build suggestions displayed are computed using every match finished with these champions.