The mechanic simply takes advantage of the ability to create digital cards that didnt exist in a deck at the beginning of the match and will disappear once it is over
For 1 mana and the cost of exiling a card from my own graveyard I can make a 1/1 Spirit
Strip Mine in mainly included as a tactic to handle Library of Alexandria, because while this deck is well situated against other blue decks, one of the most common ways you can lose if to an opposing Library if you do not get any of your engines or disruption online quickly
At level 2, Party Dude makes it so that whenever an opponents artifact is put into the graveyard, you draw a card
Its a combat snowball that keeps building as long as you keep connecting, and its reconfigure ability makes it really flexible
These cards often feature exclusive designs, such as the Golden Magikarp and Golden Gyarados released in special Japanese sets