Using Rupture on creeps in combination with Carnivore is a good way to gain Health and Mana.
If you're having difficulty feasting upon champions, try eating minions until you're larger.
Try to line up your attacks with Vorpal Spikes so that they kill minions and harass enemy champions at the same time.
Spread out when you see Sona so she can't make your entire team dance.
Kill Sona first, as she will heal up her team if left alone for too long.
The stat comparisons provided here show several significant Cho'Gath vs. Sona counter stats that may help us figure out the differences between these two champions. As an example, Cho'Gath’s KDA ratio ([kills + assists] / deaths) of NaN is greater than Sona’s ratio of NaN, showing that Cho'Gath may be more central to his team's team fighting capacity than Sona. This observation is largely caused by the difference in kills.
Cho'Gath normally has a much larger longest killing spree than his enemy does. Typically, he takes more damage than Sona. This often reflects differing health capacities, but it can also illustrate that the champion with increased HP has less agility and thus is unable to escape additional damage when poked or engaged.
Both League champions are great. Both champs have their pros and cons. In League's current meta, Cho'Gath usually fairs equally well when taking on Sona, with a 50.0% win rate. Therefore, Cho'Gath makes an ok counter for Sona.
While Cho'Gath does have a higher win rate than Sona, when they face off with one another, Cho'Gath also has a greater difficulty level that makes him a more difficult character to pick up and master. You should be careful when picking Cho'Gath into Sona.
Moreover, Cho'Gath also has some amount of utility and CC, a similar amount to Sona. This makes her just as valuable during teamfights, especially when facing champions with a lot of burst damage.
While there is not a single best champion for every situation in League of Legends, in Cho'Gath vs Sona matchups, Sona 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 teamfights.
Cho'Gath is a decent counter to Sona. You will do well by focussing your actions on maximizing your gold and cs and destroying objectives. If you can do that, you should be able to stand on your own as Cho'Gath against Sona.
If you would like to truly master Cho'Gath in order to counter Sona during both the early game 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 pay attention to the build and tips shown above, you will grow your win rate significantly and be closer to League of Legends pro players.
Cho'Gath usually gets much more CS as Sona. Champs who on average don't earn much CS typically don't require much CS to be effective, such as supports. 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 a lot of items to be effective. In either situation, try to surpass the numbers shown on this page to do well.
The top items to use in your Cho'Gath versus Sona build include Unending Despair, Heartsteel, and Hollow Radiance. When Cho'Gath bought at least these three pieces in his build, he performed much better versus Sona than with most other commonly used item sets. In fact, Cho'Gath had an average win rate of 50.0% battling Sona with this build.
To have the best probability of beating Sona as Cho'Gath, Cho'Gath players should equip the Grasp of the Undying, Demolish, Conditioning, Overgrowth, Approach Velocity, and Magical Footwear runes from the Resolve and Inspiration rune sets. Of all the rune combinations players chose for Cho'Gath vs Sona battles, this blending of runes resulted in the greatest win rate. In fact, these runes averaged a 50.0% win rate overall.
By default, tips, statistics, and builds on how to beat Sona as Cho'Gath are presented for all skill levels combined. If you want to scope the stats and builds to a particular player tier, you may use the selection menu earlier in the counter matchup guide.