Try to gank Anivia when she's laning. With multiple people, it is easier to ensure that her egg dies.
If you're playing a ranged champion, stay far enough away from Anivia so you can dodge Flash Frost more easily.
Try to fight Anivia in the lanes. In the jungle she can block pathways with lower ranks of Crystallize.
The stats shown here show several important Vex versus Anivia counter stats that may help us realize the differences between the pair. As an example, Vex’s KDA ratio ([kills + assists] / deaths) of NaN is more than Anivia’s ratio of NaN, highlighting that Vex may be more central to their team's team fighting effectiveness than Anivia..
Vex normally has a similar longest kill spree as their enemy does. Typically, they takes less damage than Anivia. This typically indicates different amounts of tankyness, yet it can also indicate that the champ with higher health has less agility and thus is unable to kite away from further harm when poked or engaged.
Both LoL champions are great champions. Both have their pros and cons. In League's current meta, Vex usually loses when trying to fight Anivia, with a 46.0% win rate. Therefore, Vex makes a poor counter to Anivia.
While Vex does have a lower winrate than Anivia, when facing one another, Vex also has a much lower difficulty level that makes them a less difficult character to learn. You may get destroyed when picking Vex into Anivia.
Furthermore, Vex has some amount of utility and CC, a similar amount to Anivia. This often 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 overall in League of Legends, in Vex vs Anivia matchups, Anivia is the better champion with a much lower win rate, less champion complexity, and a similar amount of utility to help out your team members during team fights.
Vex is a terribly counter for Anivia. You will do well by focussing your actions on keeping up your CS and destroying objectives. If you are able to do that, you should be able to stand on your own as Vex against Anivia.
If you would like to truly master Vex in order to counter Anivia during both the laning and mid / late game phases of League of Legends, you should continue reading to gather a few extra lessons on this matchup. If you mind the build and stats shown above, you will increase your win rate by a lot and be that much closer to League of Legends pro players.
Vex on average racks up a similar amount of CS compared to Anivia. Champions who typically don't acquire many minion kills usualy don't require much CS to be valuable teammates, such as sup champs. 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 shown on this page to do well.
The ideal items to prioritize in your Vex versus Anivia build include Shadowflame, Stormsurge, and Luden's Companion. When Vex bought at least these three pieces in their build, they performed significantly better against Anivia than with many other common builds. In fact, Vex had an average winrate of 46.0% when playing against Anivia with this counter build.
To have the best likelihood of coming out on top against Anivia as Vex, Vex players should use the Electrocute, Taste of Blood, Eyeball Collection, Ultimate Hunter, Manaflow Band, and Transcendence runes from the Domination and Sorcery rune sets. Of all the rune sets players chose for Vex vs Anivia LoL games, this sequence of runes resulted in the greatest win rate. Moreover, these runes provided a 46.0% win rate overall.
By default, tips, stats, and builds on how to beat Anivia as Vex are displayed for all skill levels combined. If you want to filter the stats and builds to an individual skill level, you can use the selection menu earlier in the counter matchup guide.