This was mostly due to the atrocity of stickers, which did have some competitive success, but attractions were seen as a partner mechanic with stickers, and so they were all banned together
It can't be enchanted by or equipped with cards of that colour either, and if a creature already has an equipment or enchantment on it, and then gets protection from their colour or type, that equipment or enchantment will fall off
It was in large part because the card held some amount of mystique, leading some people to buy in even though they didnt really have a use for it
You can't combine this with other alternative costs, such as flashback
The extra cards are always a surprise until the sets are released
NCR At the beginning of your end step, return target creature card with mana value 3 or less from your graveyard to the battlefield with a finality counter on it