Tabi

Double tapping a direction throws you forward, and that is all it does. Nothing about the movement protects you, so anything you run into hits for full damage and knocks you off course. Use it to leave the spot a projectile is about to land in, never to punch through a line of enemies. If you do have to travel through a crowd, get knockback immunity on first, or the dash ends with you bouncing backward into what you were escaping.

Keep holding the direction after the dash ends and your sprint accessory picks up from the speed you already have instead of starting from a standstill. On a long flat arena that turns every dash into a running start. The cooldown is short, so build the habit of using it on reaction rather than hoarding it for one perfect dodge.

The other dash in the game gives invulnerability while it moves and can be aimed at an enemy as an attack. This one cannot. If you are used to ramming things, unlearn that before you equip it.