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=So the idea with the original cost is sort of "dark pact", hence the cost in hearts rather than stars. But it's too cheap at that, and in any case, Lambs have lots of good reasons to discard their cards and lots of ways to gain cards to discard. So, let's keep the dark pact element and push it a bit further. It now only works with creature cards (which makes more intuitive sense for a resurrection). (I fixed the spelling of the title as well.)
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Biodiversity is just pure upside too-good-to-print nonsense I devised years ago when I didn't know any better. Following Fog of War, playing two cards should have restrictions and cost at least a star. I gave it the niche benefit so it wasn't just a worse version of Fog of War.
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I might have nerfed Verdant Growth too much... but in high star decks, I don't want endless VG combos, and it's more thematic if it actually grows a living card and not another spell effect.
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An 8 star card should have a huge effect. 8 stars is ordinarily very expensive! And in altering it, I wanted to keep the scary power to literally play any maid going, and I didn't expect a player to have much star change left over after paying 8 for UMW, and searching and playing for three cards shouldn't be much cheaper than this in any case. So what to do? Well, here comes the concept of Star Debt... Is this a good idea? We shall see!. But either way, it's not *more* game breaking than before (though Stirk will see that this revision actually allows one Maid that had hitherto been unsummonable to be summoned this way, albeit with debt likely).