Vicious Rivalry This card is stressing me out: I love wraths, but hate paying life
These guys are also colorless: Ancient Stone Idol Phyrexian Triniform Scuttling Doom Engine Su-Chi Cave Guard Triplicate Titan Wurmcoil Engine You still want to jam the eldrazi spawn and scion cards to maximize Azlask's ability, then use whatever interaction you need to send in your wide and tall attack force
It's also one of the best cards for Type Four with infinite mana but just one spell per turn where the mana cost on this won't matter you can always cast it when needed
Number One There's so much to talk about with Voice of Resurgence
Colorless Both Magic and Final Fantasy combine technology and the arcane, whether it be Cait Sith or Karn, and, of course, tons of swords, guns, gunswords, swords with guns attached, and guns made of swords, so we should see an interesting array of colourless cards on offer
These are scattered across different formats but you can see how dynamic the mechanic is