Skyfall is a legendary major card out of the New mechanic pool. Vault's landing hits everything within 2.5 u for 100% of your Main; cooldown 25% longer.

You can take it once · it only turns up when your Dash 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 High Vault and Double Vault. Take one and the rest are gone for the run.