There are 6 Common cards, 1 Common or The List card (The List being special cards, usually reprints, the selection of which can change between sets), three Uncommon cards, 1 non-foil Wild Card (this can be anything from the main set that the booster is a part of), 1 Rare or Mythic Rare from the boosters set, 1 Foil card of any rarity, 1 Basic Land card and, finally, 1 non-playable card, which can be a token, play aide, ad card or art card
As Theros block pushes Minotaur tribal in a new direction (Minotaurs are in red and black in this blockMinotaurs have also been in white and blue in past sets), Ragemonger was a little more focused to be not just for any Minotaur deck, but a black-red one
Elves are great at producing lots of mana on one creature thanks to Priest of Titania and Elvish Archdruid
3 Elsa, Spirit of Winter The benefits that come from playing Elsa, Spirit of Winter are very nice
Perhaps the most (in)famous example is Prosper, Tome-Bound