If the creature loses flying before Shadow Puppeteers's last ability resolves, the creature will still become a red Dragon with base power and toughness 4/4 in addition to its other colors and types until end of turn
While the two-faced layout was a huge gain to Day/Night, it didn't solve the fundamental problem
Our last two cards are Garland, Royal Kidnapper and Chaos Shrines Black Crystal
Monument to Endurance This is such an interesting artifact for decks that discard a lot of cards and one that I think brings a lot to the table for commanders such as Rielle, the Everwise or Nekusar, the Mindraker as a way to get value out of discarding cards
Regardless, double strike is evergreen for a reason
If youre playing with equipment and need some extra graveyard hate, this is likely the best option