Treasure has some nice additional benefits in Black, since there are lets of payoffs for artifacts going to the graveyard
As another example, if at the start of turn six you have five cards in your inkwell and hold a two-drop, a three-drop, and a five-drop, then just cast your five-drop and dont add anything else to the inkwell at this point
One leading contender was a landfall theme to play up the battle for Gaia and its Lifestream, but that ended up feeling too ambiguous
(6/6/2025) Yuffie enters attacking the same player, planeswalker, or battle the returned creature was attacking
The cheapest variant is from Double Masters, but it'll still set you back a ways, especially now it's gone from $20.80 to $34
Deck boxes are fairly self-explanatory: They help you get your decks from point A to point B safely