one piece tcg op-06 wings of the captain booster box Amazon.com: TCG: (OP 06), Reinforcement Mallet : Toys & Games including Germa 66 and Thriller Bark (Japanese) One Piece TCG: OP-06

Whenever a land's ability causes you to add one or more mana of the chosen color, add an additional one mana of that color

From Goblin Bombardment on a Solemn Simulacrum to Krark-Clan Ironworks to break this by making copy mana, this is awesome

It is decent being both a lord effect and a pile of zombie

Traditional foils will be exclusively awarded to top finishers

You get to pick and choose which cards you want to discard, of course, letting you keep the best cards you have

While the front halves of these cards are fine, the reward for flashing them back is great enough that they see play despite their front halves (although this sometimes requires a specific deck or synergy, like Madness for Roar of the Wurm or Gifts Ungiven for Unburial Rites)