A Do Not Bend note on the envelope helps, and for valuable cards, pay for tracking and a rigid mailer rather than hoping a thin envelope survives the sorting machines
Hourglass of the Lost I love that Wizards of the Coast (WotC) has been making three-mana rocks better and better these days, since so many players obsessed with efficiency tend to fill their decks with two-mana rocks instead
Getting seven Bobbleheads from including them in your deck, and copying them, isnt particularly difficult, but its far from automatic
The artwork in Magic is amazing - and you'll see some great examples of it on this post
Youll want your deck to have ways to put lands in the graveyard, be it fetch lands, cards like Harrow, or self-mill like Malevolent Rumble
It also lets you make infinite 1/1s and Treasure by turning Jan Jansen, Chaos Crafter into an artifact, and untapping it repeatedly with Clock of Omens