As Selena's personal weapon, she gains an innate Spd+3 boost. If her foe has at least 75% of their HP at the start of combat, she gains Atk/Spd+5 as well as neutralizes skills that guarantee the foe a follow-up attack like Brave Weapons or prevent her from performing follow-up attacks like Wary Fighter.
Tome of Storms
Grants Spd+3. At start of combat, if foe's HP ≥ 75%, grants Atk/Spd+5 to unit during combat and neutralizes effect tha guarantee foe's follow-up attacks and effects that prevent unit's follow-up attacks during combat.