As a sort of Pithing Needle on legs, Phyrexian Revoker has seen play in all sorts of decks ever since it was printed, particularly in Legacy and Vintage
Each set has something specific you can look for to work your way through the revised MTG forensic ID flowchart to correctly identify just what youre looking at: The chart essentially goes through a checklist in order of border color, the date on the card (if any), and the language the card is in
If you're completely new to the game and don't know how to play at all, we recommend starting with playmagic.com and then returning to Magic Academy
Then you choose an Army creature you control and put N +1/+1 counters on it
Yet the value of Black Lotus doesnt lie in what it is, but in what it represents
If there aren't a lot of cards being drawn, a card like Spirit Of The Labyrinth isn't going to be useful, and you'll only waste mana casting it