" Alongside landfall cards or cards like The Gitrog Monster, "Sin, Spira's Punishment" will allow you to create a pretty deep mana bank
While other filterlands are scattered throughout the Final Fantasy decks, these two are by far the most expensive, simply because they've not seen many reprints
Basing on the cards released in the last sets, it is likely that Ravensburger is trying to progressively balance card draw effects limiting not only the number of cards that can be drawn but also the conditions to achieve that
The only real problem with all that is Ornitier is basically blow up on sight as it's way too dangerous a commander to leave on the table, especially as good as blue is at counter magic and protecting stuff
In my estimation, Disney and Ravensburger have made one of the best games of the last year, overtaking even Magic: The Gathering for the most fun you can have with trading cards
These cards featured the 6 sided rainbow shape at the bottom of the card and are alternate arts of the legendary variants