Quote from Metamind »Winter Orb requires building around, which is not easy to do. The card is bad against mana rocks, mana elves and decks that are have a better board position than you. The card's strength also depends how well your opponent's deck can cope in a low economy game, and how can yours. In a card with this many conditions, it makes sense there will be varying play experiences. I didn't include it in the top 20 for low inclusion rates, frequent incorrect play (which costs games) and low subjective cube importance. I don't like how the card slows down games sometimes. Armageddon is final, Orb leaves hope of recovery so people don't really concede to it.