Its almost impossible to build a powered-down version of this Urza deck, save just ignoring any possible artifact inclusions
Modern MTG asks you to pay 4+ mana to bring a creature from the graveyard to the battlefield, so paying only 1-2 mana is a huge deal
They should have no bends, creases, scratches, marks, white edges, folds, etc
His ability just doesn't do more than soak up a guy at instant speed
the Pokmon TCG database is a good place to start for this, but you might also find help from a friendly collector, dealer or via a collectors' group on social media
It seemed like it might finally break through when Skyclave Apparition entered the format last fall, but once again it faded back to the fringes of the metagame