You can cast Smite on Mist Walkers and the Maiden of the Mist to damage or kill them.
You can attack Dark Procession to break the wall down.
Try to thin out Yorick's minions before you engage him, Mist Walkers will die from a basic attack or a single target spell.
The stat comparisons shown here emphasize some influential Senna versus Yorick counter stats that can help you appreciate the differences and similarities between the two. Senna’s KDA ratio ([kills + assists] / deaths) of NaN is greater than Yorick’s ratio of NaN, showing that Senna may be more central to her team's team fighting capability than Yorick. This observation is in large part fueled by the differences in assists.
Senna normally has a similar longest killing spree as her counter does. On average, she receives less damage than Yorick. This often reflects different amounts of tankyness, yet it can also indicate that the champion with increased HP has less mobility and thus is unable to kite away from additional damage when poked or engaged.
Both LoL champs are great. Both champs have their strengths, weaknesses, and counters. In the game's current meta, Senna usually fairs equally well when facing off against Yorick, with a 49.2% win rate. Thus, Senna makes an ok counter for Yorick.
While Senna does have a lower winrate than Yorick, when they face off with one another, Senna also has a greater learning curve that makes her a more complex champion to learn and master. You still need to be cautious when picking Senna into Yorickas her relative depth means that you may not be able to reach her full potential without a significant amount of practice beforehand.
Furthermore, Senna has a good amount of utility and CC, a similar amount to Yorick. This makes her just as valuable during team fights, especially when facing champions with a ton of burst damage.
While there isn't a single best champion for every situation in League of Legends, in Senna vs Yorick matchups, Yorick is the better champion with a similar win rate, more champion depth, and a similar amount of utility to help out your teammates during team fights.
Senna is a somewhat poor counter for Yorick. You will do well by focussing your strategy on increasing your gold income and taking out objectives. If you do that, you should be able to stand on your own as Senna against Yorick.
To truly master Senna to counter Yorick during both the laning and mid / late game phases of League of Legends, you should continue reading to learn a few extra tricks and insights into this matchup. If you mind the build and tips displayed above, you should grow your win rate by a lot and be closer to League of Legends pro players.
Senna most often gets less CS relative to Yorick. Champions who on average don't earn much CS usualy don't have to have much CS to be valuable teammates, such as support champions. These kinds of champions are able to scale well off of their abilities and first items alone. Yet, champs with a lot of CS, such as hyper-carries, usually need several high cost items to be effective. In either situation, try to surpass the values shown on this page to do well.
The ideal items to have in your Senna versus Yorick build include Lord Dominik's Regards, Rapid Firecannon, and Umbral Glaive. When Senna combined at least these three pieces in her build, she did significantly better countering Yorick than with many other typical item sets. In fact, Senna had an average winrate of 49.2% battling Yorick with these items in her kit.
To have the greatest likelihood of vanquishing Yorick as Senna, Senna players should take the Fleet Footwork, Presence of Mind, Legend: Alacrity, Cut Down, Bone Plating, and Revitalize runes from the Precision and Resolve rune sets. Of all the rune builds that we analyzed for Senna vs Yorick counter picks, this set of runes resulted in the greatest win rate. Notably, these runes averaged a 49.2% winrate overall.
If you need to see Senna vs Yorick tips and counter builds for a an individual division rank, feel free to choose one from the selection menu above. If viewing for the first time, the statistics and strategies shown are calculated using every match played with both champs.