Turn 2 sounds like a great time to do this
Cards like Hades, Lord of the Underworld and Part of Your World bring characters from the discard pile back into the hand, while Mickey Mouse, Wayward Sorcerer can keep flooding the field with Magic Brooms
Though the prices for cards when this list was first put together really were crazy (Captain Hook was selling for around $2,000 , and that put him at the bottom of the list!), its still the case that a few of them are commanding pretty eye-watering amounts
To determine the total cost of a spell, start with the mana cost or alternative cost you're paying (such as a flashback cost), add any cost increases (such as kicker costs), then apply any cost reductions (such as that of The Fire Crystal's first ability)
If you manage to nab one of these in your booster packs, cherish it
The Pro Tour Top 8 being 4 Izzet Cutter and 4 Mono-Red, with Cutter being a huge metagame chunk, means that some bans are inevitable here