This deck is ideal for learning about the nuances of the combat phase, but also does well to teach about the importance of mana and establishing a solid ramp early in the game, thanks to 12 colorless artifacts, many of which are mana generators, and also through creature abilities like those seen on Weathered Wayfarer
Serum Visions, still legal in Modern is currently in the $2-$3 range, and Preordain--generally accepted as the preferred choice for pauper, of the three--both can be found for around $4-$5 right now
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Sometimes they go beyond those limits, like with Nadu, Winged Wisdom, but sometimes its nice to remember the old classics
You can also run it fairly, as a commander that provides both a mana advantage and card advantage since it effectively copies your instants and sorceries and gives you a discount