An incredibly rare type of foiling, the Double-rainbow foil is a type that is only available in The Brothers War set
Still great in any deck thats looking to hit those landfall triggers, and perfectly justifiable in the 99 of most green decks
Blue-Purple Luffy can look at the top five cards of the deck, add one of his crewmates to his hand, and then put the remaining cards back in any order on top or bottom
The damage is a nice bit of insurance to ensure your black planeswalker does something, even if your opponents are empty-handed
The point of Old School is to play Old School, so we always encourage everyone to play quickly and have fun each round, and this tournament structure has worked very well to that end.
If you overplay them assuming they are a generic answer you will come unstuck in various ways over your games