Triple Sweep is a legendary major card out of the New mechanic pool. Heavy Cleave sweeps three passes per press at 80% each over a 25% longer lock.

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 Avalanche and Earthsplitter. Take one and the rest are gone for the run.