Spd Def Crux

Type	Icon	Name	SP	Required	Description
C		Spd/Def Crux	300	Spd/Def Rein 3	Inflicts Spd/Def-4 on foes within 3 rows or 3 columns centered on unit, and those foes suffer guaranteed follow-up attacks during combat.
Cannot use:

Effects

Effects	Targets	Conditions
Combat effects
Spd/Def-4	Foes within 3 rows or 3 columns centered on Unit	—
Guaranteed follow-up	Unit & Allies against Foes in 3 rows or 3 columns centered on Unit	—

The stat decrease that can be applied by Spd/Def Crux is considered a temporary debuff.
The temporary debuffs of Spd/Def Crux will not apply if an ally enters combat and the user is inflicted with Time's Grip, the ally is inflicted with Feud, or the ally is in combat against a foe with skills such as Impenetrable Void and C Feud 3.
As a general rule, if a unit is both prevented from making, and guaranteed to make a follow-up attack, the effects cancel out, and the Spd difference decides instead (including effects that alter the Spd difference such as Frozen).
A foe with effects such as Phys. Null Follow or Null Follow-Up will neutralize the guaranteed follow-up attack granted by Spd/Def Crux.
The guaranteed follow-up of Spd/Def Crux will not apply to the user's allies if the user is inflicted with Time's Grip, the user's allies are inflicted with Feud, or the user's allies are in combat against a foe with skills such as Impenetrable Void and C Feud 3.

Example of Area of Effect

Unit	Skill chain
Petra: Faraway Sun	Spd/Def Rein 1 5	Spd/Def Rein 2 5	Spd/Def Rein 3 5	Spd/Def Crux 5

Start	End	Event	Skill
2024-07-05	2024-08-05	Loving Sea	Spd/Def Crux
2025-02-15	2025-02-25	8th Anniv. "12 Luminaries" 2	Spd/Def Crux
2025-03-25	2025-04-08	Focus: Double Special Heroes	Spd/Def Crux

Start	End	Hero	Currency
2025-03-06T05:00:00Z		Petra: Faraway Sun	Divine Code: Part 6