If you discover an adventurer card, split card, or modal double-faced card, you might be able to cast that card with either set of characteristics depending on the effect's discover value
During 2016 the same BGS 10 1 st edition Charizard card sold for $10,993
However, its only available via Android
The fan-translation has the leader of the GR Water Fort be 'Brooke' note
(2/2/2024) If you cast a spell for another cost "rather than pay its mana cost", you can't choose to cast it for any alternative costs
If you are trying to play the deck for as cheap as possible, my advice is to play as many copies of Castle Locthwain as you have in our collection, whether that be zero or all four, and you should be fine