Or change it as two effect.
[Ghost Guard 1] (5 Lv Good Magic)
Duration 300.0s
Damage from All Attacks is decreased by 30%.
Treat 20% of Given Damage by reducing MP.
Increases movement speed by 4.
[Ghost Gaurd 2] (3 Lv Good Magic)
Probability for Fatal Attacks is increased by 30%.
Amount of Damage increased by Fatal Attack is increased by 50%.