To use it as a win condition the 6/6 body has to survive
For just two mana, you get to have a creature you control fight one of your opponents creatures when this Class enters the battlefield
While its a nice and versatile card, youre not doing any goblin typal in this deck
Whats more, a creature token can do a lot more things than a random artifact token in the majority of 1v1 decks
In general, expect trades to try and push tempo, and be generous in assessing slow cards (like Dreamscape Artist, if it makes at appearance), those with self-sacrificing abilities like echo and vanishing, or those that demand a lot of setup
That said, Im glad Scryfall has filled that niche and serves as a spiritual successor to Gatherer