Overview
Yellow Rune-keeper, built for high-burst damage.
Lightning RK got some nerfs, and it is very behind the top dogs of DPS (Champ, Hunter, Warden etc.). They have quite a lot of RNG as well when it comes to their DPS, thus not making it a very reliable choice for serious endgame content.
Stat Priority
For stats you’ll focus on Critical Rating -> Tactical Mastery -> (Enough)Finesse -> Tact/Phys Mitigations -> Vitality
After that you should focus on getting your finesse up to at least 25% but it is recommended to get to 30% for higher tier instances, as otherwise a your attacks may be resisted in T3 and higher content.
Once your Finesse target has been met you should focus on slotting Vitality essences and then Tactical Mitigation essences.
Trait Tree

Virtues
Traceries
Runekeeper LI
Heraldry
Rarity

Heraldry of the (Tempestuous) Eagle
Legendary
Word of Power
Rarity

Single Target Attack Criticals
Legendary

Single Target Attack Damage
Legendary
Word of Mastery
Rarity

Chill of Winter Duration & Critical Vulnerability
Legendary

Self Motivation Cooldown & Power Restore
Legendary

Legendary

Fury of Storm Damage & Critical Multiplier
Legendary

Vivid Imagery Damage
Legendary

Epic Conclusion Damage
Legendary
Word of Craft
Rarity

Heroic Precision
Legendary

Heroic Precision
Legendary
Heraldry
Rarity

Heraldry of the (Tempestuous) Eagle
Legendary
Word of Power
Rarity

Area Effect Attack Damage
Legendary

Area Effect Attack Damage
Legendary

Ranged Attack Extension/Damage over time
Legendary
Word of Mastery
Rarity

Ceaseless Argument Damage
Legendary

Shocking Words Damage
Legendary

Runestone Damage
Legendary

Distracting Flame
Legendary

Word of Exaltation Cooldown & Bubble Potency
Legendary

Chilling Retoric (stats)
Legendary
Word of Craft
Rarity

Ascendant Lightning (Word of Craft: Tactics)
Legendary

Ascendant Lightning (Word of Craft: Tactics)
Incomparable




