You should also take a look at current prices for each of the major grading companies, their requirements for how many cards need to be submitted at a time, and their turnaround time (how quickly you'll get your card back)
Shipping Issues & Liability: We are not liable for damages caused by the mail carrier, stolen, or lost packages
Any card which says "cast this, win the game" deserves a top-three slot on a "best of all time" checklist
Ninjutsu your way to victory by casting Oblivion in the aftermath portion so your opponent has to get rid of two cards, stopping them from implementing their original combat strategy
While gold can be spent on packs and gems can buy entry into drafts and other events, wildcards are the only way to buy individual cards when deck building on Arena
If you wanted sets back then, you could buy complete mint sets easily