Draft / Ranked opening · separate from item 1
World Atlas
400 goldKeeps a reviewed late option after the prior-patch cross-check; move or replace it only when its stated match problem is present.
Game patch 26.20Data Dragon 16.20.1
Reference patch 16.20.1
Senna Support · Normal Draft
Senna has an established low-income Support plan with useful lane pressure, protection, engage or team utility.
Established roleStandard Summoner's Rift preparationHistorical referenceRecommendation review pending
These patches track recommendation review, build validation and item lookup separately. Updating item data does not complete a build review.
- Recommendation patch
- 16.16 Data Dragon
- Build validation patch
- 16.19.1 Data Dragon
- Item lookup patch
- 16.20.1 Data Dragon
Normal Draft · Support
Evidence-supported Senna Support
Follow the completed-item order as a pre-game reference. Components and owned items do not create extra inventory slots.
First item
Bloodsong
400 goldKeeps a reviewed late option after the prior-patch cross-check; move or replace it only when its stated match problem is present.
Boots
Black Cleaver
3,000 goldThis item is part of the most-supported coherent core in the frozen prior-patch public role snapshot. Treat the sample as context, then adjust only for a clearly identified matchup problem.
Core
Boots of Swiftness
1,000 goldThis is the most-supported Boots choice in the frozen prior-patch public role snapshot; change it when the opposing damage or crowd control calls for a different defence.
Late
Statikk Shiv
3,000 goldThis item is part of the most-supported coherent core in the frozen prior-patch public role snapshot. Treat the sample as context, then adjust only for a clearly identified matchup problem.
Flexible
Rapid Firecannon
2,650 goldThis item is part of the most-supported coherent core in the frozen prior-patch public role snapshot. Treat the sample as context, then adjust only for a clearly identified matchup problem.
Pick safety
Edge of Night
3,000 goldKeeps a reviewed late option after the prior-patch cross-check; move or replace it only when its stated match problem is present.
Complete build choices
Choose the route before play
Recommendation review pending
AlternativeToo much healingApply anti-heal only when repeated healing is materially changing fights.
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Best when: Apply anti-heal only when repeated healing is materially changing fights.
- First itemBloodsong
- BootsBlack Cleaver
- CoreBoots of Swiftness
- Morellonomicon
- FlexibleRapid Firecannon
- Pick safetyEdge of Night
AlternativeCrowd controlMikael's removes eligible crowd control from an ally; check that the effect can actually be cleansed.
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Best when: Mikael's removes eligible crowd control from an ally; check that the effect can actually be cleansed.
- First itemBloodsong
- BootsBlack Cleaver
- CoreBoots of Swiftness
- Mikael's Blessing
- FlexibleRapid Firecannon
- Pick safetyEdge of Night
AlternativeTeam gets burstLocket gives nearby allies an immediate shield when enemy burst lands together.
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Best when: Locket gives nearby allies an immediate shield when enemy burst lands together.
- First itemBloodsong
- BootsBlack Cleaver
- Locket of the Iron Solari
- LateStatikk Shiv
- FlexibleRapid Firecannon
- Pick safetyEdge of Night
AlternativeCannot start fightsShurelya's movement speed helps the team engage or disengage when positioning is the problem.
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Best when: Shurelya's movement speed helps the team engage or disengage when positioning is the problem.
- First itemBloodsong
- BootsBlack Cleaver
- CoreBoots of Swiftness
- Shurelya's Battlesong
- FlexibleRapid Firecannon
- Pick safetyEdge of Night
Recommendation review pending
Runes and summoner spells
Runes and summoner spellsSennaSupport
A marksman Support still operates on reduced income. Fleet supports short trades and retreat timing; Heal keeps the shared lane safer.
Precision
Fleet Footwork
Presence of Mind
Legend: Alacrity
Cut Down
Inspiration
Biscuit Delivery
Approach Velocity
Flash
HealCheck which defensive spell the Bot partner selected before duplicating Heal, Barrier or Exhaust.
Exhaust answers a committed damage dealer; Ignite adds pressure and anti-heal; Heal protects both nearby partners.
Static alternatives
Compare the problem before changing the plan
These choices are not selected from live scores. Use one only after you identify the stated match problem yourself.
Too much healing
Morellonomicon
Apply anti-heal only when repeated healing is materially changing fights.
Crowd control
Mikael's Blessing
Mikael's removes eligible crowd control from an ally; check that the effect can actually be cleansed.
Team gets burst
Locket of the Iron Solari
Locket gives nearby allies an immediate shield when enemy burst lands together.
Cannot start fights
Shurelya's Battlesong
Shurelya's movement speed helps the team engage or disengage when positioning is the problem.
Kit reference
Senna abilities
Ability names, descriptions and numeric fields come from Riot Data Dragon. Practical reads are independently written; the current in-game tooltip remains authoritative.
Abilities Data Dragon 16.20.1Cooldown / Cost / Range Data Dragon 16.20.1
P
Passive
Absolution
What it doesWhen 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.
Practical readAbsolution is an automatic part of the kit involving damage. Track when its condition is active instead of treating every fight the same way.
Q
Q ability
Piercing Darkness
What it doesFrom the twin barrels of her Relic Cannon, Senna fires a unified beam of light and shadow through a target, healing allies and damaging enemies.
Practical readPiercing Darkness is a ranged cast involving protection or sustain. Respect its line or target area, and avoid spending it when the opponent can simply step away before the important exchange.
Cooldown15 secCost70/80/90/100/110Listed range600 units
Protection
The protection or sustain is part of the cast's value. Compare its timing with incoming damage rather than reading only the offensive effect.
W
W ability
Last Embrace
What it doesSenna 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.
Practical readLast Embrace is part of Senna's W pattern. Read its listed effect first, then track the cooldown and condition that make the next use valuable.
Cooldown11 secCost50/55/60/65/70Listed range1250 units
E
E ability
Curse of the Black Mist
What it doesSenna 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.
Practical readCurse of the Black Mist is part of Senna's E pattern. Read its listed effect first, then track the cooldown and condition that make the next use valuable.
Cooldown26/24.5/23/21.5/20 secCost70Listed range400 units
R
Ultimate
Dawning Shadow
What it doesSenna 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.
Practical readDawning Shadow is a ranged cast involving its listed effect. Respect its line or target area, and avoid spending it when the opponent can simply step away before the important exchange.
Cooldown140/120/100 secCost100Listed range25000 units
Protection
The protection or sustain is part of the cast's value. Compare its timing with incoming damage rather than reading only the offensive effect.
Adapt the plan
What to do when the game changes
Judge the whole lane or map state, not only personal kills. Choose the situation closest to the current game.
Ahead plan
Use lane control to secure vision and safe pressure
Lane
Deny space with your lane partner, but keep the carry connected to the wave instead of roaming at every opportunity.
Map play
Move first with an ally, establish vision and protect the route your team will use to enter.
Fights
Start only when allies can follow, then change to peel if an enemy reaches the protected carry.
Even plan
Balance lane pressure with protection for the carry
Lane
Hold the ability that makes opponents respect your lane and trade when both Bot-lane partners are ready.
Map play
Recall and move on safe wave timings; an unsupported roam can cost the carry an entire wave or a dive.
Fights
Control one approach and keep enough protection for the enemy's most likely engage.
Behind plan
Protect safe farm and rebuild vision one area at a time
Lane
Stay for a crashing wave, block a dive and avoid spending the key defensive ability on low-value poke.
Map play
Enter darkness with another player and ward the nearest useful entrance instead of reaching for deep vision.
Fights
Peel first and punish overextension. A blind engage rarely repairs a losing game.
Pings, movement and objectives
Senna Support map plan
Turn information into a shared decision. Move with an ally and preserve the tool that makes the next fight safe.
Make the lead open the map
- Ping
- Use On My Way before changing angle, then Assist Me on Dragon after Bot is safe to move. Use Danger if the carry starts following through an unsafe route.
- Map movement
- Roam after a pushed wave, shared recall or when the carry can collect safely. Deep wards still require the Jungler or another nearby ally.
- Objective
- Arrive early, clear the enemy entrance and hold the key engage or peel spell. Do not chase away from Dragon and hand the opponent a free route back in.
Create one clear numbers advantage
- Ping
- Use On My Way before an engage or roam, Enemy Missing as soon as a lane opponent disappears, and Danger when your carry cannot follow.
- Map movement
- Leave only on a safe wave or recall timing. If the carry would lose a full wave or face a dive, stay Bot and communicate that you are not moving.
- Objective
- Help Bot finish the wave, then enter river with the Jungler. Set vision before starting and avoid turning an even objective into an unseen gamble.
Stop the next loss before seeking a play
- Ping
- Use Retreat or Danger before an ally enters darkness, Enemy Missing immediately, and Assist Me when you need company to restore defensive vision.
- Map movement
- Do not abandon a crashing wave or vulnerable carry. Move after the wave is stable and use the nearest safe ward line rather than forcing deep vision.
- Objective
- If your team cannot enter river safely, ping Retreat and trade for farm, vision or another map resource. Contest only after creating a safe route together.
Objective setup
Four calls, in order
Pings create a shared plan; they do not replace checking waves, vision and who can move.
- 1Before the move
Around a minute before Dragon, ping the plan, spend gold if needed and make sure Bot and Mid know whether they can move.
- 2Enter together
Walk with the Jungler or another ally. Sweep one route, place useful entrance vision and never face-check alone.
- 3Before starting
Check nearby waves and enemy positions. Hold the spell that either starts a reachable fight or protects your main damage dealer.
- 4During the contest
Keep enemies away from the safe entrance, mark the reachable threat and avoid chasing so far that Dragon is left unprotected.
Later objectives: Use the same pattern for Rift Herald or Baron: communicate first, move through controlled vision with an ally, then choose engage or peel before the fight begins.
Use the guide
Put Senna into a real matchup
Compare a specific opponent, return to the champion overview, or choose another champion without losing the queue distinction.