Sadly you can only do this once per turn, and your opponents will think twice before letting you untap with a game-warping commander like The Face of Boe
The Jolly Roger is this deck's secret weapon, both because its lack of lore will make your opponents underestimate it, and because its low cost allows you to surprise your opponents by playing it alongside other characters, giving them rush and allowing them to immediately interact with your opponent's characters
Force of Vigor is a notable green retro foil reprint, green mana's take on Force of Will and Force of Negation, and is worth $37.41
Youre thinking about the theme, and what they do here, and why they are here, rather than thinking, OK, well, Im gonna pick the Aztec and the Aztecs are gonna become so-and-so
Focus on cards that benefit the pair together rather than highly specialized commander-specific effects
Of course, weve gotta throw in the granddaddy of all goad spells, Disrupt DecorumDisrupt Decorum