They pass turn four having dropped to 12 life from your Ball Lightning, and then you go Bolt, Fireblast, Fireblast, sacrifice this Mogg Fanatic, take 12 to the face and die
Not every deck will find Mesagoza handy, but decks that include the card will tend to run 2 copies of the card
This implies he is better in the creature based decks than the artifact ones but I am perfectly happy to leave it at he is really good in both kinds of decks and outstanding when there is overlap
Its unique move, Dark Binding , deals 40 damage and only needs one Dark Energy to be used
But then it came to my turn
Aettir and Priwen is a devastating Equipment in Commander, as a 1/1 can become a 40/40 in the blink of an eye