bandai one piece booster box Japanese OP-09 TCG Four Emperors : Toys & Games One card is included at random from a total of 6 types. Amazon.com: One Piece Booster Box

The speed boost to mill opponents is likely to help opponents that want cards in their graveyard unless you're turbo charging your other options to churn through opposing libraries alongside this

A Realm Reborn from Final Fantasy also has the ability to generate mana but in in a much more efficient way: [a]A Realm Reborn[/c] also costs 6 mana, but empowers all your own permanents to tap for mana (and any color)

Even if the Reserve List were done away with, these are just not printable from where I am sitting anymore

While a bit more swingy than other cards that were included in the ban, like Jeweled Lotus and Mana Crypt, it also has plenty of potential to be a bit of a dud if no one else is playing a large number of artifacts and enchantments

Toxic Deluge Toxic Deluge fits the bill of a cheaper and more flexible/effective sweeper

[10] All Lorcana booster packs also include one art card