Senna is a unique support who scales to hypercarry levels through Mist collection. She heals and pokes with Q from extreme range, roots with W, and globally shields allies with R. Her passive prevents auto farming, but each Mist wraith she collects makes her progressively more powerful.
Abilities
Skills Overview
P
Absolution
Passive
When units die near Senna, their souls are periodically trapped by the Black Mist. Senna can attack these souls to free them, absorbing the Mist that held them in death. Mist fuels her Relic Cannon's power with increased Attack Damage, Attack Range, and Critical Strike Chance. Attacks from Senna's Relic Cannon take longer to fire, deal bonus damage, and briefly grant her a portion of her target's Move Speed.
Collect Mist from minions and champions — Mist gives AD, crit, range, and life steal. Always AA mist wraiths before they expire. Never auto farm minions except for Mist.
Q
Piercing Darkness
Skillshot · Heal · Damage
From the twin barrels of her Relic Cannon, Senna fires a unified beam of light and shadow through a target, healing allies and damaging enemies.
CD: 15 · Cost: 70/80/90/100/110
Q heals allied champions hit by the projectile — angle Q so it passes through both you and your ADC for a double heal.
W
Last Embrace
Skillshot · Root · Terrain
Senna sends forth a wave of Black Mist. If it hits an enemy it latches onto them hungrily, rooting them and everything nearby after a brief delay.
CD: 11 · Cost: 50/55/60/65/70
W roots the first target hit. Use it to root divers or fleeing enemies. The terrain created lasts 4 seconds — use it to block jungle entrances.
E
Curse of the Black Mist
Toggle · Stealth · Speed
Senna draws the Mist she has stored in her weapon into a storm around her, embracing darkness and becoming a wraith within. Allies who enter the area are camouflaged and also appear as wraiths as the Mist shrouds them. Wraiths gain increased Move Speed, are unselectable, and hide their identities.
CD: 26/24.5/23/21.5/20 · Cost: 70
E makes nearby allies invisible and grants speed — great for repositioning and escaping. The stealth reveals you if you attack.
R
Dawning Shadow
Global · Line · Shield
Senna calls upon the relic stones of fallen Sentinels, splitting her relic cannon into a holy array of shadow and light. She then fires a global beam that shields allies from harm, while damaging enemies caught in the center.
CD: 140/120/100 · Cost: 100
R deals damage in the center beam and shields allies in the outer ring. Use it globally to save allies, not just offensively.
Skill Leveling Order — Max Q first, then W, then E · R at 6 / 11 / 16
| Level | Q | W | E | R | Note |
|---|---|---|---|---|---|
| 1 | Q — heal and damage online | ||||
| 2 | W — root CC available | ||||
| 3 | E — stealth escape | ||||
| 4 | Level Q | ||||
| 5 | Level Q | ||||
| 6 | R — Dawning Shadow unlocked | ||||
| 7 | Level Q | ||||
| 8 | Level W | ||||
| 9 | Q maxed ✓ | ||||
| 10 | Level W | ||||
| 11 | R rank 2 | ||||
| 12 | Level W | ||||
| 13 | W maxed ✓ | ||||
| 14 | Start leveling E | ||||
| 15 | Level E | ||||
| 16 | R rank 3 | ||||
| 17 | Level E | ||||
| 18 | E maxed ✓ |
Itemization
Recommended Builds
Starter Items
Spellthief's Edge
Gold income from Q harass — generates income without farming minions.
400g
Refillable Potion
Sustain during laning.
150g
Core Build
Boots of Swiftness
Movement speed helps Senna collect Mist and reposition for Q heals.
900g
Kraken Slayer
True damage every 3 hits — your passive gives you high crit and range for consistent procs.
3100g
Infinity Edge
At 60%+ crit from Mist, IE gives 35% more crit damage — you one-shot squishies.
3400g
Rapid Firecannon
Extra range and crit — your already massive range becomes even more oppressive.
2500g
Situational
Locket of the Iron Solari
Team shield for engage fights — sacrifice damage for safety.
2200g
Guardian Angel
Second life for the hypercarry Senna — you're a priority target.
3200g
Thornmail
Grievous wounds on auto-attacks vs heavy healing comps.
2700g
Never farm minions — only collect Mist from dying minions (wraiths) and champions. Your Mist is worth more than CS gold at every point in the game.
Utility Core
Moonstone Renewer
Healing amplified during combat — your Q heals are massive with Moonstone.
2500g
Ardent Censer
Q heals and E stealth trigger Ardent — buffs your whole team's attack speed.
2300g
Ionian Boots of Lucidity
CDR for more Q heals and W roots.
950g
Redemption
AoE heal during teamfights — combine with R shield for massive utility.
2300g
Full enchanter Senna sacrifices carry damage for more healing. Best when your ADC is already a hypercarry and needs pure support.
Runes
Sorcery Primary
Arcane Comet
Q procs Comet on the first target hit — massive poke damage from Senna's already long range.
Manaflow Band
Mana sustain — Senna Q spams a lot of mana in laning.
Transcendence
CDR at level 5 and ability resets on kills — more Q heals and W roots.
Gathering Storm
Scaling AD stacks on top of Mist AD — Senna is a late game beast.
Precision Secondary
Presence of Mind
Mana restore on ability use — negates Senna's mana hunger in lane.
Legend: Alacrity
Attack speed for weaving autos between Q casts.
Shards
Ability Haste · Armor · Health
Gameplay
How to Play Senna
01
Early Game
Q Poke and Heal, Collect All Mist
- Q every time it's off cooldown — it heals you and your ADC simultaneously while poking the enemy.
- Never auto-attack minions except to collect Mist wraiths (the green glowing souls). Let your ADC CS.
- W roots are your best defensive tool — use them on aggressive supports who engage on you.
- E stealth is a great escape from ganks — use it when the jungler approaches and walk away unseen.
- Collect Mist from champions by auto-attacking dying enemies — even support kills generate Mist.
02
Mid Game
Scale Through Mist, Use R Globally
- R globally saves dying allies — always check the minimap for your laners' HP and R them from anywhere.
- Roam when Mist is available in other lanes — kill Mist from dying enemies across the map.
- Your Q range grows with Mist — by 30 minutes you outrange most support abilities entirely.
- Use E to sneak vision into enemy jungle or objective areas without revealing yourself.
- W creates terrain that blocks jungle paths — use it to deny escape routes during ganks.
03
Late Game
Hypercarry While Keeping Allies Alive
- At full Mist stacks, your Q heals for massive amounts — keep it on cooldown constantly.
- R covers the entire map — always have it ready for Baron and Dragon fights across the map.
- Your auto-attacks outdamage most ADCs at full build with Infinity Edge — play like a marksman.
- Life steal from Mist keeps you alive through burst — itemize with sustain options for survivability.
- Position at maximum range in teamfights — your range advantage is your biggest strength.
Teamfighting
How to Teamfight as Senna
Senna teamfights from extreme range. Q heal keeps your team alive while you auto-attack carries from across the screen. R globally shields allies at risk. W roots anyone who reaches your position.
1
Pre-Fight — Max Range Poke
Before engage
01
Q poke from max range before the fight starts — lower enemy HP to help your team's burst.
02
Check global R targets — who is low across the map that needs the outer ring shield?
03
W root any flankers approaching your backline before the fight starts.
Never stand within melee range in teamfights. Senna's entire value comes from extreme range — if you're in danger, something went very wrong with your positioning.
2
Fight — Q Heal and Carry Damage
Fight opening
01
Q continuously — heal the most damaged ally and deal damage simultaneously.
02
Auto attack their carries — your range lets you safely hit backliners from safety.
03
W root anyone diving toward you — instant stop to any melee approach.
04
R if a carry is dying globally or use offensively to pierce the fight.
3
Aftermath — Global R Saves
Mid-fight
01
R reactively to save dying allies in other lanes or fights.
02
E stealth retreat if the fight collapses and divers reach you.
03
Collect Mist from dying enemies — never miss a wraith at end of fights.
The outer ring of R shields allies — but the inner beam deals damage. Use R to hit 2 birds with one stone: damage the enemy frontline and shield your own backline simultaneously.
Tips & Tricks
Advanced Mechanics & Hidden Tech
Advanced mechanics for Senna.
Basic
Never Farm Minions
Your passive spawns Mist wraiths from dying minions (not from your last hit). Let your ADC CS — auto only Mist wraiths. Each wraith gives AD, crit, range, and life steal — more valuable than gold.
Basic
Q Through Multiple Champions
Q heals the first champion it passes through, including yourself. Position yourself in line with your ADC so Q heals both of you on the same cast.
Intermediate
W Terrain Blocking
W creates terrain for 4 seconds. Use it in the jungle to block escape paths, or in lane to prevent enemies from retreating to their turret after you've engaged.
Intermediate
Global R Saves
Check the minimap every 30 seconds for dying allies. R your top laner who's getting dived, your jungler fighting for Dragon — a global shield save can win fights you're not even in.
Intermediate
Mist Priority Targets
Collect Mist from champions dying near you before collecting from minions. Champion Mist has a higher drop rate. Always auto the last 2-3 hits on dying enemies to secure the wraith.
Advanced
E Invisibility Wards
E makes you invisible — use it to walk into unwarded areas and place deep vision without risk. You can literally walk into the enemy base for vision while invisible during E.
Advanced
Range Scaling Positioning
At full Mist stacks, your Q has 1,800+ range — longer than most turrets. Position yourself where no enemy can safely reach you. You should never be taking damage in late-game teamfights.
Basic
R Shield Timing
R shield goes to allies in the outer ring — use it before your team takes burst, not after. If your ADC is about to take Zed R, pre-emptively fire R their direction for the shield.
Matchups
Counters & Matchups
Senna struggles against aggressive early lanes that punish her weak early game and champions that can gap-close through her range. She scales incredibly hard and dominates late game.
Click any matchup to expand tips & how to play against them
Loses Against
Blitzcrank hook reaches Senna from longer range than she expects early game and pulls her out of position before she has enough Mist for her range advantage.
Stay behind minions at all times in lane. Your range advantage only matters when you have enough Mist — play safe early.
Leona's engage CC chain is longer than Senna can Q heal through at early levels. She shuts down your Q healing cycle with sustained lockdown.
W root Leona the moment she walks up to prevent her E dash engage. Keep minions between you and her.
Pyke's hook and stun combo kills Senna quickly before she can Q heal. He also executes low-HP targets through R before Senna's healing matters.
Never position near walls. Pyke hook from fog of war is his only real engage — clear vision around you.
Wins Against
Soraka can't match Senna's damage output and Senna's Q healing is comparable to Soraka's heals at mid game. You out-range and out-damage her entirely.
Poke Soraka with Q — she must heal herself, wasting it on herself instead of her ADC. She runs out of mana trying to sustain.
Sona's range doesn't match Senna at mid-game. Your Q outranges her Q-poke and you outdamage her in every exchange.
Out-range her Q poke from the start. At 30 Mist, you simply can't be touched by Sona's abilities.
Yuumi attached to the ADC doesn't affect your ability to Q poke and auto-attack their ADC. Your damage outdamages Yuumi's healing easily.
Focus the ADC — ignore Yuumi. Your Q heals your ADC as fast as Yuumi heals her host.