Embercleave only technically costs that much because of its ability: it costs one less for each attacking creature you control
Its effect is much more important than getting a few extra mills out of someone, and there are so many other ways to gain life, you won't ever need to bother
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Speaking of standing out Raised By Giants Pump Spells If Livaan, Cultist of Tiamat was Raised by Giants, they would be a sight to behold
Incapsula incident ID: 1816000830633135133-382404865744704754
The deck that makes the most use of Solitude is probably 4c Elementals where it can be tutored up and then Ephemerated for some crazy value , but it is also vital for Azorius Control where it represents one of the few threats the deck can present