This leads to wonderful situations where you can have most of your board hopping around and allows for absurd combos like generating infinite mana with Peregrine Drake before milling out an opponent with Thought-Knot Seer
Glimpse the Unthinkable was a better card in the past, but it can still put in some good work, even though it's a one-off mill for ten
Four-mana ramp is a vacation
If you're casting an adventurer card or split card with escape, you choose how you wish to cast it, then pay the appropriate cost (for the Adventure, the creature, or the half of the split card you chose) plus exiling three cards
A card derived from past cards to fit the nostalgic theme
Powerful rare cards are bought and sold one at a time, but a huge collection of low-value cards can often be sold as a single item