Colossus Wisp is a legendary major card out of the New mechanic pool. Spirit Seed raises one giant wisp at 350% damage whose bite splashes 2 u, living 50% longer.

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 Hive and Martyr Swarm. Take one and the rest are gone for the run.