Lysithea

Weapon: Hades Ω

Assist: Draw Back / Reposition / Flexible

Special: Glimmer / Moonbow / Luna

Passive A: Swift Sparrow 3 / Death Blow 4 / Impact skills / Fury

Passive B: Lull Spd/Res / Desperation

Passive C: Time's Pulse

Sacred Seal: Swift Sparrow / Brazen Atk/Spd / Darting Blow / Quickened Pulse / Hardy Bearing

• Much of Lysithea's base kit is already optimal as-is. With a few optimization tweaks such as Swift Sparrow over Death Blow (the additional +7 Speed taking advantage of Lysithea's great Speed and follow-up potential at the cost of only 2 Attack), she becomes even more pristine offensively near default.
  • Keeping Death Blow is fine as Lull Spd/Res and Hades Ω's in-combat Speed already give Lysithea quite an advantage in the Speed department. It is not recommended for builds utilizing Desperation as said skill encourages Lysithea to improve her follow-up potential across as many matchups as possible.
  • Sturdy or Mirror Impact has two main benefits: the large increase in a chosen defense allows for much greater safety in attacking enemies, while disabling the enemy's follow-up attacks is extremely helpful in situations where their absolute survival is prioritized (i.e. Aether Raid omnitanks).
  • Fury's visible stat-padding allows for safer initiations (assuming Lysithea's first hit doesn't already make the opposition melt), and the recoil suffered after combat gives Lysithea an also-safe way to activate Desperation by herself.
• Hades Ω's Special acceleration effect combined with that of Time's Pulse allows Lysithea's Special to charge with increased ease.
  • Glimmer and Moonbow's cooldown is reduced to 1, and with Time's Pulse, charges instantly at the start of every turn if they aren't already prepared to fire. By itself, this aspect gives Lysithea immense one-shot potential.
  • Builds running Desperation or outsourced Pulse support may consider running Luna as Lysithea is able to fire the stronger Special with greater safety.
• Lysithea's Sacred Seal is reserved for the usual offensive choices, including Darting Blow, Swift Sparrow, and Brazen Atk/Spd.
  • Certain environments or team setups may benefit particularly from Quickened Pulse (if running a 3 CD Special and Pulse support isn't available) or Hardy Bearing (a specialty option versus Brave Ike and Vantage users in Aether Raids Defense).

Weapon: Hades Ω

Assist: Draw Back / Reposition / Flexible

Special: Luna / Blazing Light / Blazing Wind / Draconic Aura / Blue Flame

Passive A: Death Blow 4 / Life and Death / Fury

Passive B: Special Spiral

Passive C: Time's Pulse / Savage Blow / Res Smoke / Flexible

Sacred Seal: Hardy Bearing / Sturdy Blow / Swift Sparrow / Atk/Spd 2 / Atk +3 / Quickened Pulse / Savage Blow

• This is a variant of the previous build, but with focus on Special activation. Using Special Spiral specifically allows for the instant charging of 3 and 4 CD Specials after Lysithea fires off her choice of a 3 CD or an AOE Special.
• Luna, Draconic Aura, and Blue Flame all stand at an effective 2 CD thanks to Hades Ω cutting their cooldown values and can thus be fully charged with no frills after Special Spiral.
• Thanks to Hades Ω's cooldown cutting effect, an area-of-effect Special is perfectly within Lysithea's range of options as she doesn't have to equip Heavy Blade or Flashing Blade to make them ready instantly.
  • A very important thing to keep in mind, however, that AOE Specials do NOT benefit from Hades Ω's in-combat +6 Attack boost, as its damage technically applies outside of battle. Regardless, Lysithea's ranged status, awesome Attack, and ability to target Resistance (as the majority of FEH units have greater Defense than Resistance) make AOE Specials quite powerful still.
• This build's A slot skills and Sacred Seals should accommodate the chosen Special.
  • Death Blow fortunately comes by default on Lysithea and is the perfect complement to Draconic Aura, Luna, or Blue Flame for maximal one-shot damage. As such, Swift Sparrow and Sturdy Blow as the Sacred Seal doubly provide similar benefits.
  • Life and Death or Fury is better suited for AOE Specials as these types of Specials calculate Lysithea's visible Attack minus the opponent's visible Resistance. As such, Lysithea will want to maximize this stat gap as widely as possible, with Atk/Spd 2 or Atk +3 also being neat Sacred Seal complements due to visibly improving her Attack.
    • Hardy Bearing wipes Lysithea's vulnerability to Vantage units and Urvan, making it a great option for Aether Raids Defense and other general environments.
    • A neat mention of note is that Life and Death 4 can be inherited along with Special Spiral from any Igrene.
  • In the absence of outsourced Pulse support, Time's Pulse and Quickened Pulse help Lysithea reach her first full charge faster and generally be more independent of teambuilding. This, of course, is a resource matter, and these slots can be modified to any other useful skill/seal of your choosing, especially smoke skills for extra punishment on surrounding enemies.