When Purphoros enters the battlefield, your devotion to its color (including the mana symbols in the mana cost of Purphoros itself) will determine if a creature entered the battlefield or not for abilities that trigger whenever a creature enters the battlefield
When Rancor is put into a graveyard from the battlefield, return Rancor to its owner's hand
It offers a lot of fun and the decks are creative and have layers to them
You can cast cards from the top of your deck that have either one of those keywords, effectively giving you a free card in your hand at all times, assuming the top of your deck works with you a bit
(10/1/2009) 6) Each player puts all of their other revealed cards (instants, sorceries, planeswalkers, and Auras that can't enchant anything) on the bottom of their library in any order
Kotis, the Fangkeeper says that you exile X cards from the top of your opponent's library and you may cast only the spells exiled