Riven lacks a source of healing or strong defense and must compensate with burst combos. Lead into fights with Broken Wings and Ki Burst, while using Valor to escape and absorb counter-harass.
Riven's Broken Wings locks onto the champion your cursor is over at the time of cast. If you want to move past your opponent, make sure that your cursor is past your opponent as well.
Rammus often stacks high Armor, leaving him especially vulnerable to caster damage while not in Defensive Ball Curl.
Pay particular attention to when his Defensive Ball Curl is off. Rammus has much lower stats than a normal tank when he's out of the stance.
The stat comparisons shown on this page emphasize some strategic Riven against Rammus matchup stats that can help you realize the distinctions between the two. Riven’s KDA ratio ([kills + assists] / deaths) of NaN is greater than Rammus’s KDA ratio of NaN, highlighting that Riven may be more central to her team's team fighting effectiveness than Rammus. This observation is in large part fueled by the difference in kills.
Riven normally has a slightly larger longest killing spree than her matchup does. On average, she receives less damage than Rammus. This is usually reflective of differing health capacities, but it can also hint that the one champ has less agility and thus is not able to flee from additional damage when poked or engaged.
Both LoL champs are great. Both have their pros and cons. In League's current meta, Riven usually fairs equally well when trying to fight Rammus, with a 50.0% win rate. As a result, Riven makes an ok counter for Rammus.
While Riven does have a higher winrate compared to Rammus, when they face off with one another, Riven also has a much greater learning curve that makes her a more complex champion to develop with. You should be careful when picking Riven into Rammusas her relative depth means that you may not be able to reach her full potential without a lot of practice beforehand.
Additionally, Riven has some amount of utility and CC, a similar amount to Rammus. This makes her just as valuable during team fights, especially when facing champions with a ton of burst damage.
While there is not a single best champion in League of Legends, in Riven vs Rammus matchups, Rammus is the better champ with a similar win rate, more champion depth, and a similar amount of utility to help out your teammates during teamfights.
Riven is a decent counter to Rammus. You will do well by focussing your play on maximizing your gold and cs and destroying objectives. If you can do that, you should hold your own as Riven against Rammus.
To learn all of the intricacies of Riven in order to counter Rammus during both the laning and mid / late game phases of League of Legends, you should continue reading to learn a few extra lessons on this matchup. If you pay attention to the build and suggestions displayed above, you will increase your win rate significantly and be closer to League of Legends pro players.
Riven typically picks up much more CS relative to Rammus. Champions who on average don't get many minion kills often don't have to have much CS to be valuable teammates, such as support champions. These kinds of champions are able to scale well off of their skills, stats, and first items alone. Yet, champions with large amounts of CS, such as hyper-carries, usually require many items to be effective. In either situation, try to do better than the numbers displayed on this page to do well.
The top items to prioritize in your Riven versus Rammus build include Spear of Shojin, Death's Dance, and Sundered Sky. When Riven used at least these three items in her build, she performed significantly better against Rammus than with most other commonly used counter builds. In fact, Riven boasted an average win rate of 50.0% when playing against Rammus with this counter build.
To have the highest probability of vanquishing Rammus as Riven, Riven players should take the Conqueror, Triumph, Legend: Tenacity, Last Stand, Nimbus Cloak, and Transcendence runes from the Precision and Sorcery rune sets. Of all the rune combinations players chose for Riven vs Rammus counters, this combination of runes resulted in the highest win rate. Moreover, these runes gave a 50.0% winrate overall.
By default, tips, stats, and builds on how to beat Rammus as Riven are displayed for all skill levels, merged. If you want to narrow the statistics and builds to a specific skill level, you can use the selection menu located earlier on the page.