It costs 4 mana for the cards that care about that, it creates a Wizard token for the wizard deck, and it draws you into more cards
During the fight, if you use Sabin's Meteor Strike ability, he will pick up the entire train and slam it into the ground
Balan's deck also uses cards like Sram, Senior Edificer and Danitha Capashen, Paragon to make those equipment cheaper and/or more more profitable to use
It can provide a pretty huge creature with limited work, and it can even recur itself, which can lead it to become a problem
Eight points of power isn't anything to sneeze at, but Adamantoise is mostly a defensive play
Cards that create lander tokens, effects that give you no maximum hand size, and multicolor payoffs all help this deck function