Lingering Torrent is a legendary major card out of the New mechanic pool. Soul Torrent burns for 20 pulses (5 s) at 60% damage; the drain heals 0.5% per pulse.

You can take it once · it only turns up when your Ultimate 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 Maelstrom and Wildfire Torrent. Take one and the rest are gone for the run.