Even without Upper Yard, you should use your Leader effect to play aggressively
Shadowless prints, Japanese exclusive releases, tournament prize cards, and certain modern chase cards like Alternate Art rares also attract strong offers
I know I dont have to convince anyone to play Blasphemous Act, as a one mana board-clear is a no-brainer
For example, Garruk's Gorehorn, Garruk's Uprising, Garruk's Harbinger, and Garruk, Unleashed all used the green frame
Higher quality cards will jump in price, as you can expect to pay about $0.95 for lightly played (LP) followed by a near-mint (NM) capping out closer to $0.99, though a stray LP copy jumped to $2.00
All standard-sized card sleeves will fit Disney Lorcana cards