Valter

Preferred IV: +SPD / -RES

Weapon: Cursed Lance (+Eff)

Assist: Positional Support

Special: Bonfire / Ignis

Passive A: Brazen Atk/Spd / Atk/Spd Solo / Fury 4

Passive B: Vantage / Desperation

Passive C: Spd/Def Rein / Def Smoke

Sacred Seal: Brazen Atk/Spd / Spd/Res Solo

• Valter’s playstyle is simple: engage in combat, use his decent bulk to survive, and then use the resulting damage (both from combat and self-inflicted through his refined Cursed Lance) to activate low HP threshold skills, which allows him and his allies to clean up the enemy team.
• Valter is a fantastic unit to run double Brazen skills on, as they will activate even if he takes just a few points of damage. Because the threshold is so easy to reach due to his Cursed Lance self-damage, Valter can attack a relatively harmless sword unit in order to take the necessary damage. Once his HP hits the threshold for Brazen and his refined Cursed Lance, he gains an effective +24 Attack, +25 Speed and +5 Defense.
• If Valter can double during his Player Phase attack, he will unleash a fairly lethal Bonfire- if he doesn’t double and is knocked down to 75% HP, his Bonfire damage increases wish his Cursed Lance and he gets put into Vantage range, allowing him to strike first in Enemy Phase with a hard-hitting attack.
• This is without factoring in any buffs or his own C slot, which can further increase his effective Attack and Speed by 5 using the flier exclusive Spd/Def Rein. 
• Ignis is another option for his Special, and generally best used if he can secure doubles- such as if he’s being run with Hone Fliers or if you're anticipating him taking damage to things like Bolt Traps. If he can double during Player Phase with Ignis, then it will be primed during the Enemy Phase, where he can use Vantage and activate his Special.
• Desperation is another option if you'd rather use him in primarily Player Phase, as his massive Speed buffs and double Brazens being activated will allow him to double all but the speediest of opponents with an effective 64 Speed.
• Finally, there’s Fury, which is an attractive option with Wings of Mercy Aether Raids comps, since Fury 4 depletes Valter of a total of -14 HP per combat. Using Fury, Valter can circumvent any need to take damage from the enemy during his first combat and can instead achieve Brazen, Desperation, or Vantage range after his first combat from self-damage alone, while also enabling his Wings of Mercy teammates to teleport to him.