blaziken pokemon card ex (3/108) [EX: Battle Stadium] – Plug Evolves from null Type Blaziken EX XY54/211 - XY

Of course they are

Completing a dungeon will also allow specific ability text on other cards to be used, with Gloom Stalker and the very meta Dungeon Crawler revealed as two such cards that gain benefits from a completed dungeon - double strike and the option to return to the player's hand from the graveyard respectively

The ceiling (best-case scenario) includes hiding spells from Thoughtseize, shenanigans with Counterbalance and Miracle, and shuffling away situationally useless cards

Thankfully, Gatherer and Scryfall help to fix this problem, however, that only works if you can access those websites

Huge value potential here

If an effect refers to a "[subtype] card," it refers only to a card that has that subtype