Supernova is a legendary major card out of the New mechanic pool. Spirit Burst erupts three times over 0.6 s at 40% damage each, with a 1 u shove.

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 Singularity and Scorched Ring. Take one and the rest are gone for the run.