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.
Mordekaiser builds up a powerful damage aura when fighting champions, so keep your distance.
Realm of Death will cut you off from your teammates completely. Try to save mobility spells to escape Mordekaiser once inside
Damage he deals can be converted into a large shield, and consumed for health
The stat comparisons provided here show several valuable Riven vs. Mordekaiser matchup statistics that may help us understand the distinctions between these two champs. For instance, Riven’s KDA ratio ([kills + assists] / deaths) of NaN is greater than Mordekaiser’s KDA ratio of NaN, indicating that Riven may be more central to her team's team fighting potential than Mordekaiser..
Riven typically has a similar longest killing spree as her matchup does. Commonly, she receives less damage than Mordekaiser. This commonly reflects different amounts of tankyness, but it can also indicate that the champion with higher health has less mobility and thus is unable to kite away from further damage when poked or engaged.
Both LoL champs are great champions. Both champs have their pros and cons. In League's current meta, Riven usually fairs equally well when playing against Mordekaiser, with a 49.7% win rate. Therefore, Riven makes an ok counter for Mordekaiser.
While Riven does have a lower winrate than Mordekaiser, when facing one another, Riven also has a much greater learning curve that makes her a more time consuming character to learn and master. You still need to be cautious when picking Riven into Mordekaiseras her relative depth means you may not be able to reach her full potential without a lot of practice beforehand.
Furthermore, Riven has some amount of CC and other utility, a similar amount to Mordekaiser. This makes her just as valuable during teamfights, especially when trying to counter champions with a lot of burst damage.
While there isn't a single best champion for every situation in League of Legends, in Riven vs Mordekaiser matchups, Mordekaiser is the better champion with a similar win rate, more champion depth, and a similar amount of utility to help out your team members during late stage team fights.
Riven is a somewhat poor counter to Mordekaiser. You will do well by focussing your tactics on maximizing your CS and taking out objectives. If you can do that, you should hold your own as Riven against Mordekaiser.
If you would like to truly master Riven to counter Mordekaiser during both the laning and mid / late game phases of League of Legends, you should keep reading to gather a few extra tricks and insights into this matchup. If you mind the build and suggestions displayed above, you will grow your win rate by a lot and be that much closer to League of Legends pro players.
Riven on average accumulates a similar amount of CS relative to Mordekaiser. Champs who on average don't get many minion kills often don't require much CS to be valuable teammates, such as sup champs. These kinds of champions are able to scale properly off of their abilities and first items alone. Yet, champs with large amounts of CS, such as hyper-carries, often need many items to be effective. In either case, try to exceed the values shown on this page to do well.
The top items to focus on in your Riven versus Mordekaiser build consist of Maw of Malmortius, Spear of Shojin, and Sundered Sky. When Riven combined at least these three items in her build, she performed much better vs Mordekaiser than with most other typical counter builds. In fact, Riven had an average win rate of 49.7% when countering Mordekaiser with this counter build.
To have the greatest likelihood of annihilating Mordekaiser as Riven, you should take the Conqueror, Triumph, Legend: Alacrity, Last Stand, Sudden Impact, and Ingenious Hunter runes from the Precision and Domination rune sets. Of all the rune combinations players used for Riven vs Mordekaiser counter picks, this combination of runes resulted in the greatest win rate. In fact, these runes gave a 49.7% win rate overall.
If you need to see Riven versus Mordekaiser tips and counter stats for a a distinct division rank, feel free to choose one from the selection menu displayed above. If viewing for the first time, the statistics and build suggestions given are computed using every game completed with these champions.