Just checked all the cards to finally close this card transfer project:
Prices: purchase price / +1500
Rarity of upgraded cards -> "Upgraded"
Weapons: ATK/HP: x/y when flying (to be discussed)
Subjects to change:
Aether: Rarity
Air: Rarity, Prices
Darkness: Rarity, Prices
Death: Rarity, Prices
Earth: Rarity, Prices
Entropy: Rarity
Fire: Rarity, Prices
Gravity: missing completely
Life: Rarity
Light: Rarity, Prices, "N/A" -> "-", "0" -> "-"
Time: Rarity
Water: Done
Other: Done (to be discussed)