Top augment choices for Senna include Deft (Silver), Soul Siphon (Gold), Dual Wield (Prismatic).
Overall
Dual Wield
Dual WieldWhen you Attack, fire a bolt that deals @AttackReduction*100@% damage and applies your {{ Item_Keyword_OnHit }} effects at @OnHitMod*100@% effectiveness. Gain @AttackSpeed*100@% total Attack Speed.
Tier: S+
Pick %: 17%
Fan the Hammer
Fan the HammerWhen you Attack, fire @AdditionalBolts@ bolts that each deal physical damage and applies your {{ Item_Keyword_OnHit }}.
Tank It Or Leave ItYou can Critically Defend using your Crit Chance (max @MaxChance*100@% chance), giving you a chance to reduce damage. Gain %i:scaleCrit% @CritChance*100@% Crit Chance.
Tier: S+
Pick %: 8%
Typhoon
TyphoonYour Attacks fire a bolt at an additional target dealing reduced damage and applying {{ Item_Keyword_OnHit }} effects.
Tier: S+
Pick %: 6%
Gold
Soul Siphon
Soul SiphonHeal for @HealPercentage*100@% of damage done by Critical Strikes. Gain %i:scaleCrit% @CritChance*100@% Crit chance.
Tier: S+
Pick %: 13%
Vulnerability
VulnerabilityYour Item and damage over time effects can Critically Strike. Gain %i:scaleCrit% @CritChance*100@% Crit chance.
Tier: S+
Pick %: 11%
Quest: Angel of Retribution
Quest: Angel of RetributionRequirement: Heal or prevent @RequirementAmount@ damage to allies. Reward: Gain @AttackSpeed*100@% Attack Speed, and your Attacks deal additional magic damage equal to @HealPowerToDamageConversion*100@% Heal/Shield Power.
Tier: S+
Pick %: 9%
Prismatic
Dual Wield
Dual WieldWhen you Attack, fire a bolt that deals @AttackReduction*100@% damage and applies your {{ Item_Keyword_OnHit }} effects at @OnHitMod*100@% effectiveness. Gain @AttackSpeed*100@% total Attack Speed.
Tier: S+
Pick %: 17%
Fan the Hammer
Fan the HammerWhen you Attack, fire @AdditionalBolts@ bolts that each deal physical damage and applies your {{ Item_Keyword_OnHit }}.