While the vintage market holds the records, the modern market is driven by speculation on new releases
It has such sheer combo and value potential by being able to flicker a creature for just that it must be dealt with promptly and effectively
Internet Archive Antiquities War: On The World of Magic: The Gathering #3
If Rowan, Scholar of Sparks (a modal double-faced card) is exiled by this ability, you won't be able to cast its back face, Will, Scholar of Frost, this way because it would be a blue spell
For Equipment, it doesn't matter who controls the Equipmentyour opponent's Equipment ending up on your creatures is unusual, though not unheard of
One of the best black creatures, Blood Artist is an important source of repeated lifegain triggers for the decks that want it, as well as a win condition