Nothing runs away with a game beyond just drawing fewer blanks, which having Thoughtseize in your deck only helps you lose
But Hardy of Myra's Marvels seems like far more trouble than its worth when it comes to deckbuilding
6 Minnie Mouse, Musketeer Champion (Enchanted) - $284.62 The Golden Swashbuckler In addition to being one of Disney's most iconic characters of all time, Minnie Mouse, Musketeer Champion is a powerful card
Buy a friend who's showing a preference for black and green their own Witherbloom theme booster, and they have a decent pool of cards ready to go.
While you'll use the cards in your graveyard to determine the stats and abilities of your graveyard-that's-a-creature, those cards aren't themselves on the battlefield
I know some define a lord as having to grant +1/+1, but R&D finds that definition a little too narrow.) One of the creatures on the list is Rat