Delay Image / Advance Image

When delay image is cast, the recipient is surrounded by a thin magical aura that bends time slightly, causing the person's image to appear one second behind the actual motion. This gives the target a +2 to their AC. This spell can be used in conjunction with other armour-class-affecting spells, but it is not cumulative with itself. 

The reverse of spell this is Advance Image, When Advance Image is cast, the recipient must make an Intelligence saving throw vs Spell DC or is surrounded by a thin magical aura that bends time slightly, causing a second image to appear one second in front of their actual motion. This gives the target a -4 to their AC. The recipient can retake the save at the end of its turn.