Despair is very effective against other tanks, so make sure you're in range of opponents with the highest Health.
Amumu is highly dependent on teammates, so try laning with your friends for maximum effectiveness.
Cooldown Reduction on Amumu is very strong, but it's often difficult to itemize for it. Grab the Golem buff whenever possible to gain Cooldown Reduction without sacrificing stats.
Try to stay away from walls. Ornn is much less strong if he cannot stun you.
Attack Ornn to keep him from creating items in lane.
The stats provided here clarify several influential Amumu versus Ornn matchup statistics that may help us grasp the differences between the pair. For instance, Amumu’s KDA ratio ([kills + assists] / deaths) of NaN is better than Ornn’s KDA ratio of NaN, demonstrating that Amumu may be more central to his team's team fighting effectiveness than Ornn..
Amumu often has a similar longest killing spree as his enemy does. Commonly, he takes a similar amount of damage to Ornn. This often reflects different amounts of tankyness, but it can also show that the champion with higher HP has less mobility and thus is unable to escape additional damage when poked or engaged.
Both LoL champions are great. Both have their strengths, weaknesses, and counters. In League's current meta, Amumu usually loses when facing off against Ornn, with a 46.6% win rate. Therefore, Amumu makes a poor counter to Ornn.
While Amumu does have a lower win rate compared to Ornn, when they face off with one another, Amumu also has a lower learning curve that makes him a less complex character to learn and master. You may get destroyed when picking Amumu into Ornn.
Furthermore, Amumu has a great amount of utility and CC, a similar amount to Ornn. This makes her just as valuable during team fights, especially when trying to counter champions with a lot of burst damage.
While there isn't one best champion in League of Legends, in Amumu vs Ornn matchups, Ornn is the better champion with a much lower win rate, less champion complexity, and a similar amount of utility to help out your allied champions during late stage team fights.
Amumu is a bad counter for Ornn. Focus your play on keeping up your CS and clearing objectives. If you can do that, you should be able to stand on your own as Amumu against Ornn.
To truly master Amumu in order to counter Ornn during both the laning and mid / late game phases of League of Legends, you should continue reading to learn a few extra tricks and insights into this matchup. If you mind the build and suggestions presented here, you will increase your win rate significantly and be closer to League of Legends pro players.
Amumu usually racks up a lot less CS relative to Ornn. Champs who on average don't take many minion kills often don't have to have much CS to be effective, such as supports. They are capable of scaling properly off of their abilities and first items alone. Yet, champions with a lot of CS, such as hyper-carries, usually require a lot of items to be effective. In either case, try to do better than the values displayed on this page to do well.
The most important items to focus on in your Amumu versus Ornn build include Sunfire Aegis, Thornmail, and Randuin's Omen. When Amumu used at least these three pieces in his build, he did a lot better when facing Ornn than with most other commonly used item sets. In fact, Amumu boasted an average winrate of 46.6% battling Ornn with these items in his kit.
To have the greatest likelihood of beating Ornn as Amumu, Amumu players should take the Conqueror, Triumph, Legend: Tenacity, Last Stand, Cheap Shot, and Ultimate Hunter runes from the Precision and Domination rune sets. Out of all the rune builds we have analyed for Amumu vs Ornn LoL games, this sequence of runes yielded the best win rate. In fact, these runes provided a 46.6% win rate overall.
By default, tips, stats, and builds on how to beat Ornn as Amumu are shown for all skill levels combined. If you would like to filter the stats and builds to an individual division, you may use the selection menu at the top of this page.