Unless you specifically collect vintage cards, reprints offer better value
That ability is "When you move your venture marker into this room, [effect]." After you move your venture marker into the last room of a dungeon and that room's ability resolves (or otherwise leaves the stack), the dungeon leaves the game and you have now completed it
Because the strainer pales before Orcish Lumberjack , who's driving this glorious steampunk machinery that looks like something out of a more realistic interpretation of a Dr
My favorite is Devastating Mastery as a four-mana Planar Cleansing that sweeps all dorks, planeswalkers, artifacts, and enchantments
If youre simply looking for generically powerful cards to add to your cEDH decks, while there may be a hidden gem somewhere (V.A.T.S.), most of these cards wont make the cut