Whenever a modified creature you control deals combat damage to a player, exile the top card of your library
Sometimes that rare slot would even be replaced by a mythic rare, which is why seeing an orange symbol from the corner of your eye always gave you a quick hit of dopamine
Mana Ramp I love having Reckless Barbarian and Patron of the Arts as Dragon cards that you can cast early to provide some temporary mana to power out a big Dragon, or maybe even The Ur-Dragon itself
I was pretty close to including Charming Prince or Raging Battle Mouse, so either of those could fit in an empty 2-drop slot
Next to the Charizard, the Blastoise single (#2) is the second-most coveted card
It takes a while before a deck with the number of nonbasic lands tri-color decks would naturally play would get to stop sacrificing lands, and many of even your similarly colored opponents will be able to keep operating for a similar amount of time unless you bust this out right away