Step Up
You can close the distance when a foe tries to move away.
Preqrequisite
Base attack bonus +1.
Benefit
Whenever an adjacent foe attempts to take a guarded step away from you, you can also take a guarded step as a reaction as long as you end up adjacent to the foe that triggered this ability.
Source
Core Rulebook pg. 162
Dragonscript
ID
4c75a9d868a8042d7f62937e
Preqrequisite
condition character.bab.featPrerequisite >= 1;