Temporal backlash

This spell creates a web of defensive energy over your body comprised of shifting temporal space

When an enemy strikes you the attackers weapon must make an item saving throw or be shunted forward in time 1 d4 rounds returning to the targets hand as if had never left 

While this spell is active you have disadvantage on saving throws and strength and dexterity checks, and your age and size are reduced to that of a child, your speed is reduced by half