If the copied creature has in its mana cost, X is 0
Suffice it to say, drawing four cards a turn (even if three of them are guaranteed to be basic lands) would be classified quite clearly under "broken." 4
Yorion, Sky Nomad The Companion cost for Yorion is deceptively harsh - adding extra cards to your starting deck actually hurts quite a lot, reducing your deck's consistency by a long way
will you join Cloud, the beloved hero, or side with his nemesis, Sephiroth
Bubble Smuggler Caelorna, Coral Tyrant Cephalid Inkmage Famished Worldsire Gearseeker Serpent Glacier Godmaw Grappling Kraken Iceridge Serpent Keen Buccaneer Koma, World-Eater Loch Mare Serpent of the Pass Shark Shredder, Killer Clone Sin, Spira's Punishment Starwinder Summon: Leviathan The Unagi of Kyoshi Island Tolarian Terror Ultros, Obnoxious Octopus
As with Muraganda Raceway, this one is fairly speculative