Companion originally worked by letting you reveal the companion card from your sideboard at the start of the game, as long as your deck met the conditions of the companion card
A single extra mana on each spell to add a token creature is also a good deal and works well with merfolk anthems like Master of the Pearl Trident
Months prior I had been able to profit similarly, but now I just could not get a good trade to save my life

Card Set(s) -ONE PIECE CARD THE BEST- [PRB-01] CARD VIEW OP02-108 | C | CHARACTER Donquixote Rosinante Attribute Special Block icon 1 Type Navy/Donquixote Pirates Effect [Blocker] (After your opponent declares an attack, you may rest this card to make it the new target of the attack.) Card Set(s) -PARAMOUNT WAR- [OP02] CARD VIEW OP02-108 | C | CHARACTER Donquixote Rosinante Attribute Special Block icon 1 Type Navy/Donquixote Pirates Effect [Blocker] (After your opponent declares an attack, you may rest this card to make it the new target of the attack.) Card Set(s) -PARAMOUNT WAR- [OP02] CARD VIEW OP02-108 | C | CHARACTER Donquixote Rosinante Attribute Special Block icon 1 Type Navy/Donquixote Pirates Effect [Blocker] (After your opponent declares an attack, you may rest this card to make it the new target of the attack.) Card Set(s) -Black Smoker- [ST-19] CARD VIEW OP02-114 | SR | CHARACTER Borsalino Attribute Special Block icon 1 Effect [Opponent's Turn] This Character gains +1000 power and cannot be K.O.'d by effects

Nothing has been removed since 2002 either
Other languages usually sell for less, with some exceptions for low-print-run releases