If it had in its mana cost, X is 0 when determining its mana value
Be wary of pushy sellers, and just take your time to decide
Still, I believe its worth trying I can envision scenarios where you play Throne of Death and Mire Triton early on, end up milling one or two Quakebringers, and then cast a Bonecrusher Giant on Turn 3 and threaten an extra two or four damage each turn of the game
Feldon of the Third PathFeldon of the Third Path can capitalize on the discard by making an artifact copy of any creature you toss into the bin, and sacrificing the token to the Post before the end step to get other important artifacts back from your graveyard, or to draw cards
Beanith: Ok, now you're just being mean Shire, why aren't we showing off Neyali, Suns' Vanguard or Otharri, Suns' Glory
I first came upon Darkness at my first LGS job