Piercing Fan is a legendary major card out of the New mechanic pool. Fan of Knives throws 6 knives per fan that pierce everything, at 135% damage and 25% more speed.

You can take it once · it only turns up when your Special 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 Blade Halo and Volley Storm. Take one and the rest are gone for the run.