While theres a decent selection of codes, the site itself isnt organized in a way that makes it easy to find what youre looking for
If an effect makes you discard a card and you dont have any, nothing happens
Pro Tip: If youre bringing in Containment Priest against Death & Taxes, make sure you dont play yourself into your opponent getting free exiles on your own creatures
You can also try to get a Support character like Huey or Dewey out on turn two or three to ensure that your four-cost character can banish whatever Maid Marian targets, but a Maui, Soaring Demigod will almost always do the trick
The ability Affinity for artifact creatures ( This spell costs less to play for each artifact creature you control
Common cards are everywhere in Magic: The Gathering, most of the cards in every pack you open are commons, and they will often fill out your decks when youre in limited formats like Draft or Sealed