The complete text of the Role tokens is listed below for reference
This is a very powerful deck that takes advantage of the new domain mechanic, combined with a number of dual lands, to summon huge creatures, product a ton of creature tokens, and absolutely overpower your opponent in the mid- to late-game
Im just speculating, but Im guessing the lack of horses comes from them taking a back seat to whatever happens to be riding them, despite how theyre kind of essential to fantasy storytelling
Sure, eventually, you could have so many artifact creature tokens that Urza takes off, but that is a "win more" style of thinking
They can be combined to form Urza, Planeswalker
This spoiler just confirmed that it will probably be the best deck in the format until it's banned