Allure lets you banish what you don't need to potentially draw what you do and fills your exiled zone with cards ready to be used as fuel for banish-dependent effects (like that of Pot of Acquisitiveness)
While other cards since have played with this effect, such as Harmless Offering and Coveted Falcon, and this spell archetype even has its own beloved commander, Zedruu the Greathearted, the original is still the best, as the highly amusing Jeff Miracola artwork makes it stand out among the normally super-serious artworks found on Magic cards
I have gathered price data from recent auctions for comparison: If you're interested in buying cards from GameStop, it's best to check their value from different sources before purchasing
Rare (R): A card with no special holographic or textured features, but with a lower pull rate than a U card
This guide excludes the obvious methods for earning Hourglasses, such as completing Missions and claiming event rewards