op07 one piece booster box Card Game: 500 Years in the Future… This package includes many ways to strengthen leaders from previous sets BANDAI One Piece - 500

What happens to the buffs (what are the bears types after that)

Each starter deck includes: 1 starter deck of 60 cards, including 2 foil cards of the characters on the package front 11 game tokens 1 rulebook 1 booster pack containing 12 randomized cards

The additional text here is that it costs one mana less to cast for each creature card in your graveyard, and it can be as cheap as one Black mana

This card will be especially useful in decks where your commander is an engine piece that has to tap down, or your commander is a planeswalker and you need to guarantee yourself an expendable body to not take big chunks of damage to your life total