Quick Trail is a legendary major card out of the New mechanic pool. Affinity Dash every 2.1 s: a 0.15 s trail at 15% of your Main.

You can take it once · it only turns up when your Dash ability can actually use it · it can be offered for 0 of the 34 abilities.

Only one card can reshape that ability this way — this one, or Blazing Trail and Long Trail. Take one and the rest are gone for the run.