Ob Nixilis, the Hate-Twisted fits this list better but should be treated more like a 5-mana removal spell with upside, or a more costly Underworld Dreams that is a different type of permanent
What you are seeing is through to the back of the card (although you are seeing it mirrored as you're looking through the card)
For the eight cards Im focusing on today, the legends are all more expensive in FEA than in Surge, and vice versa for the regular cards
And, of course, use your judgment and keep your flexible costs in mind
Let's dive into your pathway to get more cards
The mana can be spent to exile a card with foretell from your hand face down, not to cast the foretold card from exile (unless it's an instant or sorcery spell)