Fell Beasts Shrieks Splice cost being twice as expensive as its normal casting cost may seem weird, but you can Splice this onto any instant or sorcery, which can play rather nicely alongside copy effects that copy the Spliced version of that card
To make it feel like a lands deck, it needs to be about moving the lands around in interesting ways sacrificing them for weird value but consistently replacing them so you dont end up behind on mana
As mentioned, they're not even considered double-faced cards like transforming and Modal Double-Faced Cards
Forget aiming at collectible cards, to be competitive, maximising EXs is the priority
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