Enduring Ascension is a legendary major card out of the New mechanic pool. Ascendant Form lasts 40 s at +19% Power, and over-heal on entry becomes Ward at 100%.

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 Avatar and Radiant Ascension. Take one and the rest are gone for the run.