A reprint of Hammer of Nazahn, when it is played, the Piko Piko Hammer or another Equipment can be attached to a creature for free, only costing mana to be equipped on the players next turn
Your green deck will want to play a lot of lands so Mossborn Hydra can quickly become a gigantic, trampling creature
7) Frankensteins Monster from The Dark Artist Anson Maddocks Halloween and Frankenstein go together like [insert your own simile here]
Not only can you use them for mana or find your colors when the opportunity is right, but if you draw them late in the game, you can cycle them away
Determining the decks overall mana curve is another determinant that can influence this decision
Before the Shining Revelry expansion, Pocket featured eight rarity categories, with the crown being the rarest