Read more about the components that make up a map in this blog
The biggest difference is that hexproof allows the permanent with the ability to be the target of spells by its controller, allowing that player to buff their creature with auras and equipment while shroud doesnt
It was featured in the Feast of Flesh Intro Pack , and players who started their Magic journey around this time may have fond memories of this card
Getting two item cards from your discard pile is obviously very useful, but Darkrais Dark Pulse is no slouch, doing 30 damage for every Darkness energy attached to it
They protect your unsleeved cards from being scratched up in the deckbuilding phase, and they make it SO much easier to pick up individual cards instead of sliding them to the edge of the table
Its good at loading your graveyard, getting value out of Enchantments, and giving you Zombie upside