Phoenix Whirlwind , known as Wheel of Fortune and later Volcanic Wheel of Fortune in the Japanese version, is Jack Atlas' Duel Runner
Tough to get rid of without exiling it, and tough to block it thanks to its size, Darksteel Colossus is also easy to tutor and cheat out thanks to being an artifact
The power of Reflecting Pool really depends on your own land cards, but it can actually be very versatile in mana fixing
This sounds like a downside, but pair it with cards that have their damage scale equal to the damage counters on them, like Scream Tail, and you can prime them up to deal more damage
Regardless of whether its Deathrite Shaman, Delver of Secrets or Ragavan, Nimble Pilferer, Daze makes one-mana threats into format destroyers