Being the personal weapon of Kris, the Spear of Shadow act like an enhanced Slaying Lance, with more might. It's unique atribute happens either if her foe is with full HP or on enemy phase, whereas Kris's penalties are nullified and the foe is debuffed by 5 points to all stats during combat.
Spear of Shadow
Accelerates Special trigger (cooldown count-1). If foe initiates combat or if foe's HP = 100% at start of combat, neutralizes penalties on unit and inflicts Atk/Spd/Def-5 on foe during combat.