I think he should either draw one card or Reckless Impulse at end of combat, because drawing two extra cards a turn would be too much at four mana and a hard push at five.
We had significantly more color breaks in the original exploratory design file than ended up in the set
Despite the strict requirement for playing Cassiopeia, its a very powerful Supporter card
Following in the legendary Frog tradition of caring about lands in your graveyard , Uurg scales its power based on how many you have there, while also serving as a sacrifice outlet for the lands you have in play
Kaheera's Companion rule is: every creature card in your starting deck is a Cat, Elemental, Nightmare, Dinosaur, or Beast card
Even Red ended up contributing more to this deck than I expected, not just with some good creatures but also Relentless Assault to double our combat damage output, Fervor to give our stuff haste, and both Price of Progress and Pandemonium which gives the deck some reach with burn to finish off low opponents