With some mana left to spend, you can get a creature again and again, every turn
Chart shows the price of Growlithe #42 at the end of each month going back as long as we have tracked the item.
It is a good card to get your credit score started, but it becomes somewhat of a nightmare once circumstances throw you under the bus
Theres also the contradiction of cards wanting instants and sorceries in the yard (Eris, Roar of the StormEris, Roar of the Storm, Octavia, Living ThesisOctavia, Living Thesis, Smoldering StagecoachSmoldering Stagecoach), and other spells wanting to take them out (Treasure CruiseTreasure Cruise, Bloodthirsty AdversaryBloodthirsty Adversary, Dig Through TimeDig Through Time, Arcane BombardmentArcane Bombardment)
Excellent cards typically sell for 85-95% of the Near Mint price