A green card is any card that has green in its mana cost or a green color indicator
What Makes a Card First Edition
Noncreature spells include artifacts and enchantments, so you can trigger these effects by playing a Sol Ring or other mana rocks
The only question is whether you can keep them alive long enough to realize that value, given how desperate opponents will be to see them die 7
"Based on the competitive bidding when Heritage Auctions sold a similar set in November, we expected the interest in this set to be even higher, and our collectors did not disappoint. Offered in its original shrink wrap, the First Edition Base Set Sealed Booster Box broke the previous world record for an auction sale, set when Heritage Auctions sold a similar booster box in November 2020 for $360,000
For 2 mana, you get a 2/1 that flips the top card of your library every upkeep, adds it to your hand, and makes you lose life equal to its mana value