Mawloc Gruul is a really tough color pair in Cube
Steel characters are great at going toe-to-toe with your opponents characters and coming out on top, which contrasts with Ruby as a lot of the time Rubys creatures will be banished trading upwards in ink cost
One way to determine if your deck makes sense or not is to draw starting hands of 7
Urza's Command can drop the power of other player's dorks out of nowhere, make a Powerstone, make a tapped Construct token to win the game, and then scry and draw, so I think that the Construct and scry and card draw are the default here, and that's pretty good for four mana instant speed
This is a huge game-changer when youre not sure if youve equipped something correctly early on in a game, and makes messing around with mathematical equations in the late game incredibly easy
Feel free to copy these paragraphs should a dispute come up in your games