In this example, the Devour Flesh is a two-for-one that trades a removal card for a creature card
Rakshasas Bargain Rakshasa's Bargain is a way to draw two out of four cards and put two cards in your graveyard, which can be the most important part of the card in the right deck
Conspiracy Unraveler (This card is a cluster bomb.) It allows you to play bombs, then use the bombs to play more bombs
The Timmy inside of me is hoping to get a discover variant of this card, but that would probably be too good
To get MissingNo, the famously glitched out Pokemon placeholder that's missing a number (hence its in-game name, MissingNo), go to Cinnabar Island and go into the Pokmon Research Labratory and trade with anyone in the first room
With the exception of charizard, you can get pretty much all 151 for well under $100 per card