For increased range and damage, try casting Shock Blast through the Acceleration Gate.
If you find yourself taking lots of damage, try using Jayce's Hammer Stance, as it grants you additional defenses.
Be sure to switch stances often. It will enhance your attacks and grant you quick bursts of speed.
Buying an item with Grievous Wounds will make Swain much easier to kill during his Demonic Ascension.
Swain's passive is very potent if you are immobilized. Make sure to be extra careful around enemies who have immobilizing effects.
High mobility counters all of Swain's basic abilities: Death's Hand does more damage the closer he is, Vision of Empire has a very long delay and Nevermove must start returning back to him to be dangerous.
The stats shown on this page feature some critical Jayce against Swain counter stats that may help us appreciate the differences between the two. Jayce’s KDA ratio ([kills + assists] / deaths) of NaN is better than Swain’s ratio of NaN, showing that Jayce may be more central to his team's team fighting capacity than Swain..
Jayce normally has a similar longest killing spree as his matchup does. Typically, he receives less damage than Swain. This often reflects different amounts of tankyness, but it can also illustrate that the one champion has less mobility and thus is unable to escape additional harm when poked or engaged.
Both League of Legends champs are great. Both have their strengths, weaknesses, and counters. In League's current meta, Jayce usually loses when trying to fight Swain, with a 45.5% win rate. Therefore, Jayce makes a poor counter for Swain.
While Jayce does have a much lower win rate than Swain, when facing one another, Jayce also has a lower level of difficulty that makes him a less difficult champ to learn and master. You may get destroyed when picking Jayce into Swainas his relative depth means that you may not be able to unleash his full potential without a lot of practice beforehand.
Additionally, Jayce also has only a small amount of utility and CC, a similar amount to Swain. This makes her just as valuable during teamfights, especially when facing champions with a lot of burst damage.
While there isn't a single best champion for every situation in League of Legends, in Jayce vs Swain matchups, Swain is the better champ with a much lower win rate, less champion complexity, and a similar amount of utility to help out your allied champions during team fights.
Jayce is a terribly counter to Swain. You will do well by focussing your play on increasing your gold and cs and destroying objectives. If you do that, you should do very well as Jayce against Swain.
If you would like to learn all of the intricacies of Jayce to counter Swain during both the early game and mid / late game phases of League of Legends, you should continue reading to pick up a few extra tricks and insights into this matchup. If you pay attention to the build and stats displayed here, you will increase your win rate significantly and be that much closer to League of Legends pro players.
Jayce most often accumulates more CS relative to Swain. Champs who typically don't acquire much CS often don't require much CS to be effective, such as support champions. They are able to scale properly off of their abilities and first items alone. Yet, champions with large amounts of CS, such as hyper-carries, often have to have many items to be effective. In either case, try to exceed the numbers shown on this page to do well.
The ideal items to have in your Jayce versus Swain build consist of Muramana, Serylda's Grudge, and Voltaic Cyclosword. When Jayce used at least these three items in his build, he performed a lot better versus Swain than with most other common counter builds. In fact, Jayce boasted an average winrate of 45.5% battling Swain with these items in his kit.
To have the highest probability of crushing Swain as Jayce, Jayce players should equip 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 combinations players used for Jayce vs Swain battles, this sequence of runes resulted in the highest win rate. Notably, these runes averaged a 45.5% winrate overall.
By default, tips, statistics, and builds on how to beat Swain as Jayce are presented for all skill levels, merged. To narrow the statistics and builds to a particular skill level, you can use the selection menu earlier on the page.