The dark fog-Swamp Graveyard with its decaying matter is eerie, and you can easily imagine Zombies or other undead coming out en-masse to attack the nearby town that dared to allow their rest to go disturbed and forgotten for so long
Something more fun and maybe less strong- but I wouldn't be surprised to come back to this design though
Plus, Heroic Intervention also works on lands, so you make your whole team immune to a key issue here
A box of Dragon Shields always comes with 100 sleeves, giving you plenty of extra when you go to sleeve up a constructed deck plus its sideboard, or a complete Commander deck
After you got done using what you needed from your hand, you could play a Professor Oak card, discard what was left of your hand, and then draw seven new cards giving you even more to reach for
Prismatic Secret Rare (PScR) | Horizontal & vertical foil pattern