
At the beginning of each opponent's upkeep, you manifestmanifestPut it onto the battlefield face down as a 2/2 creature. Turn it face up any time for its mana cost if it's a creature card. the top card of that player's library. (Put it onto the battlefield face down as a 2/2 creature. Turn it face up any time for its mana cost if it's a creature card.)
Whenever a creature you control but don't own diesdiesA creature dies when it goes from the battlefield to a graveyard. Being exiled or returned to hand is not dying., its owner loses 2 life and you gain 2 life.
Hover an underlined rule to see what it means.
Read from the rules text. A card that enables a keyword makes or is the thing; a card that rewards it gets better when you have it. Two cards interact when one enables what the other rewards.