Shivan Devastator mana value
I just played a game in which I have cast a Shivan Devastator with x=4 and also had a Llanowar Elf on the board. Next turn my opponent casts Temporary Lockdown, which should have exiled both and Elf and Devastator (on the battlefield x=0). But it didn’t… Devastator was left on the battlefield. Cool for me I guess, but a bug nonetheless ;)
1
vote
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Rezzahan#77802
commented
Not a bug. X in a mana cost is 0 anywhere but on the stack. On the stack X is whatever value you chose for it.
107.3g If a card in any zone other than the stack has an {X} in its mana cost, the value of {X} is
treated as 0, even if the value of X is defined somewhere within its text.