Really effective long ranged poke and Passive procurement agency. Her poke also allows her to heal up with her Q, so she is really good against poke.
Her W can allow her to CC an entire group of enemies with utmost ease. This ability becomes very powerful when she is fighting in closed spaces.
Her E can allow her to sneak an entire team through non-warded area and surprise an enemy team. This can be beneficial while setting up death brushes.
She is very immobile and can be killed easily if she is all-in’d. This can shut her down during the early game and force her to play defensively.
Her enemies can look to all-in her as soon as she misses her W, so she needs to use that ability quite carefully. She will be more focused on getting her Passive stacks in order to be able to carry later in the game.
The E invisibility can be easily countered with a properly placed Control Ward. Her Q costs a lot of mana as well and can make her run out of resources if she uses that ability in a carefree manner.
0 - 15 min
Get level 2 first and look for a favourable trade. Gaining an early health lead is key to getting a kill later on down the line. Level 2 in the bottom lane is the first minion wave followed by the next 3 melee minions.
Your goal during the laning phase is to look for kills and abuse the enemy as often as you can. Try to play aggressive frequently to gain a lead.
After destroying the bottom lane tower, rotate to the mid lane and try to take that tower. This will open up the map and give your team a gold lead.
15 - 25 min
As a Support, you’re quite vulnerable and can easily be killed when going to ward, when you’re moving around the map, and when you’re alone. To reduce the chances of dying and getting caught out of position, try and stick with your team at all times.
Keep a constant eye on what major objective is spawning next. If it’s spawning soon, make sure you place vision around the objective as quickly and as safely as possible before retreating to safety. Having vision around major objectives is key.
Look for picks during the mid-game. If you can pick someone off with the help from your allies, you can abuse their death timer to earn more gold and possibly take a tower, an objective or get more kills.
Ward major objectives and place vision in high traffic areas in the late stages of the game. Keep them warded so you can see the enemy move around the map and see them starting the objective.
Stay with your team at all times. Avoid moving around the map alone so you do not get caught out. Getting caught out will result in your team having to play 4v5. Do not ward alone unless you know where the enemy is.
Peel for your allies as much as possible. Keeping them alive for as long as possible in team fights is a must in order to win the game.
Her level one and two are good for long-ranged poking in the lane. She should focus on gathering some souls early on, hitting level 2 quickly, and then going for an all-in on the enemy with her W.
Level 6 is a decent powerspike as it unlocks a finishing and defensive move. She can use it to impact fights on the other side of the map and save herself if a fight goes south.
The first item component will help her survive the lane for a more extended time. It allows her to increase her overall damage output, which means she will set up plays for her ADC.
Getting two points in her Ultimate R will allow Senna to significantly impact team fights in the game. The damage output, along with the shield, is perfect for winning clutch team fights.
At level 9, her Q will be completely maxed out. This will let her deal massive amounts of damage in a concise duration while also healing multiple allies during fights.
She will have her core items completed by now. Even if she is a Support, she will deal tons of damage to the enemy team due to her Passive.
Senna Passive makes her scale unlimitedly. This is good as Senna can easily transition into carrying her team during the game's later stages.
Senna is excellent in late-game fights due to her Passive, heal, and damage. Her positioning will matter a lot, and she should aim to take fights that happen near choke points.
She will have multiple items by now, making it easier for her to one-shot squishies. With enough Passive wraiths, she will be able to deal with tanks quickly as well.