Threadline is a legendary major card out of the New mechanic pool. Skewer's thrust reaches 8 u through 10 enemies at 90% per strike; the first-enemy bonus is gone.

You can take it once · it only turns up when your Main 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 Impaler and Needle. Take one and the rest are gone for the run.