While you can slip a few goad mechanics into other decks, if you want to fully dedicate your deck to the mechanic you want to have the right commander
There are scannable cards that unlock game content, illustration rares with amazing images, and even some Gastly that have made it to the World Championships
Triggered abilities only come into effect when some other condition in the game becomes true
'draws three cards' is awesome
Examples of cards in this grade include cards with minor border wear, minor corner wear, very minor bending, slight scratching, clouding, or scuffing/loss of gloss on the front due to play
One place that people are starting with Pioneer is looking to port over and upgrade decks that dominated old Standard formats