Veigar is extremely Mana and Cooldown Reduction dependent. Try buying items with these stats in order to increase the effectiveness of your passive and Baleful Strike.
Veigar is very fragile. It is valuable to select at least one summoner spell that can be used defensively.
Use Event Horizon to increase your chances of landing Dark Matter.
Janna's at her strongest when buffing another ally. If you can harass her ally, it will weaken her ability to fight you.
Save an interrupt ability for when Janna uses her ultimate.
Listen for the charge up sound on Howling Gale in case Janna is trying to hit you with it from off screen or from brush.
The stat comparisons shown on this page underscore several important Veigar versus Janna matchup stats that may help you figure out the differences and similarities between the two. Veigar’s KDA ratio ([kills + assists] / deaths) of NaN is better than Janna’s KDA ratio of NaN, showing that Veigar may be more central to his team's team fighting effectiveness than Janna. This observation is in large part caused by the difference in kills.
Veigar typically has a much larger longest killing spree than his foe does. Commonly, he receives a similar amount of damage to Janna. This is usually reflective of differing health capacities, but it can also imply that the one champion has less mobility and thus is unable to escape further damage when engaged or poked.
Both League champs are great champions. Both have their strengths, weaknesses, and counters. In League's current meta, Veigar usually loses when trying to fight Janna, with a 46.8% win rate. Therefore, Veigar makes a bad counter to Janna.
While Veigar does have a lower winrate compared to Janna, when on opposite teams, Veigar also has a greater learning curve that makes him a more challenging champ to pick up and master. You should expect to face a difficult match when picking Veigar into Jannaas his relative depth means that you may not be able to reach his full potential without a significant amount of practice beforehand.
Additionally, Veigar also has a good amount of utility and CC, a similar amount to Janna. This makes her just as valuable during teamfights, especially when trying to counter champions with a lot of burst damage.
While there is not one best champion in League of Legends, in Veigar vs Janna matchups, Janna is the better champion with a much lower win rate, similar champion depth, and a similar amount of utility to help out your allied champions during team fights.
Veigar is a bad counter to Janna. Focus your strategy on increasing your gold and cs and destroying objectives. If you can do that, you should do very well as Veigar against Janna.
To truly master Veigar in order to counter Janna during both the laning and mid / late game phases of League of Legends, you should keep reading to learn a few extra tips and tricks for this matchup. If you mind the build and suggestions presented above, you should grow your win rate significantly and be that much closer to League of Legends pro players.
Veigar typically accumulates much more CS as Janna. Champions who on average don't acquire much CS typically don't require much CS to be effective, such as supports. These kinds of champions are able to scale properly off of their skills, stats, and first items alone. Yet, champs with large amounts of CS, such as hyper-carries, typically need many items to be effective. In either situation, try to do better than the values reported here to do well.
The top items to prioritize in your Veigar versus Janna build include Rabadon's Deathcap, Shadowflame, and Stormsurge. When Veigar included at least these three pieces in his build, he performed significantly better countering Janna than with many other commonly used counter builds. In fact, Veigar had an average win rate of 46.8% battling Janna with these items in his kit.
To have the greatest chance of annihilating Janna as Veigar, you should take the First Strike, Magical Footwear, Biscuit Delivery, Cosmic Insight, Manaflow Band, and Transcendence runes from the Inspiration and Sorcery rune sets. Out of all the rune builds players picked for Veigar vs Janna counters, this sequence of runes yielded the highest win rate. In fact, these runes averaged a 46.8% win rate overall.
By default, tips, statistics, and builds on how to beat Janna as Veigar are given for all ranked divisions combined. If you would like to narrow the statistics and builds to a particular division, you should use the selection menu located earlier on the page.