Dimensional Assault
You tumble through space, making a short dimensional hop to better position yourself for an attack. Teleport to any square in range that's within reach of a creature, and then make a melee Strike against one creature within your reach.
Traits
An action with this trait requires a degree of mental concentration and discipline.
Focus spells are a special type of spell attained directly from a branch of study, from a deity, or from another specific source. You can learn focus spells only through special class features or feats, rather than choosing them from a spell list. Furthermore, you cast focus spells using a special pool of Focus Points—you can't prepare a focus spell in a spell slot or use your spell slots to cast focus spells; similarly, you can't spend your Focus Points to cast spells that aren't focus spells.
This indicates abilities from the magus class.
Teleportation effects allow you to instantaneously move from one point in space to another. Teleportation does not usually trigger reactions based on movement.