Spreading out Hextech Micro-Rockets leads to more reliable damage and more efficiency against multiple targets, but focusing it creates the biggest impact.
The success of Electron Storm Grenade is very important to Heimerdinger's survival. The slow and stun both are capable of keeping enemies in place long enough to punish them, but it is also the first line of defense against a surprise attack.
Turret placement can be a deciding factor in a battle. Against most enemies turrets are best when they can support each other, but if the enemy has a lot of area of effect damage your turrets can be destroyed quickly. Placing turrets in brush can lead to a surprise attack in your favor.
The stat comparisons shown on this page clarify some strategic Heimerdinger vs. Senna counter stats that can help us distinguish the distinctions between the pair. Heimerdinger’s KDA ratio ([kills + assists] / deaths) of NaN is more than Senna’s ratio of NaN, indicating that Heimerdinger may be more central to his team's team fighting potential than Senna..
Heimerdinger normally has a similar longest kill spree as his enemy does. Commonly, he takes a similar amount of damage to Senna. This typically indicates differing health capacities; however, it can also imply that the champ with more HP has less mobility and thus is unable to kite away from additional damage when poked or engaged.
Both LoL champs are great champions. Both champs have their strengths, weaknesses, and counters. In League's current meta, Heimerdinger usually loses when playing against Senna, with a 48.8% win rate. Therefore, Heimerdinger makes a bad counter for Senna.
While Heimerdinger does have a lower win rate than Senna, when on opposite teams, Heimerdinger also has a greater difficulty level that makes him a more difficult champion to learn and master. You should be careful when picking Heimerdinger into Sennaas his relative depth means you may not be able to unleash his full potential without a lot of practice beforehand.
Furthermore, Heimerdinger has a good amount of utility and CC, a similar amount to Senna. This makes her just as valuable during teamfights, especially when facing champions with a ton of burst damage.
While there isn't a single best champion in League of Legends, in Heimerdinger vs Senna matchups, Senna is the better champion with a lower win rate, more champion depth, and a similar amount of utility to help out your allied champions during teamfights.
Heimerdinger is a somewhat poor counter for Senna. Make sure you focus your play on maximizing your gold income and destroying objectives. If you can do that, you should hold your own as Heimerdinger against Senna.
If you would like to learn all of the intricacies of Heimerdinger in order to counter Senna during both the early game and mid / late game phases of League of Legends, you should continue reading to pick up a few extra tips and tricks for this matchup. If you pay attention to the build and tips presented above, you will grow your win rate by a lot and be closer to League of Legends pro players.
Heimerdinger on average gets more CS as Senna. Champs who typically don't take much CS often don't need much CS to be valuable teammates, such as supports. They are able to scale properly off of their abilities and first items alone. Yet, champions with a lot of CS, such as hyper-carries, often require many items to be effective. In either case, try to surpass the numbers shown on this page to do well.
The best items to use in your Heimerdinger versus Senna build consist of Morellonomicon, Zaz'Zak's Realmspike, and Liandry's Torment. When Heimerdinger included at least these three items in his build, he did significantly better when facing Senna than with most other commonly used item sets. In fact, Heimerdinger boasted an average win rate of 48.8% when countering Senna with this counter build.
To have the best probability of coming out on top against Senna as Heimerdinger, you should use the Arcane Comet, Manaflow Band, Absolute Focus, Scorch, Magical Footwear, and Biscuit Delivery runes from the Sorcery and Inspiration rune sets. Of all the rune sets players chose for Heimerdinger vs Senna matchups, this mix of runes yielded the best win rate. Moreover, these runes gave a 48.8% win rate overall.
By default, tips, statistics, and builds on how to beat Senna as Heimerdinger are given for all ranked divisions. If you want to scope the stats and builds to a particular skill level, you should use the selection menu above.