Enchantment â Aura Curse
At the beginning of enchanted player's upkeep, that player sacrifices a creature or planeswalker. If the player can't, they lose 5 life.
There are many important moments in the story, but the most crucialâ€”called â€œstory spotlightsâ€â€”are shown on cards. These cards have the Planeswalker symbol in their text box; this symbol has no effect on gameplay. You can read more about these events in the official Magic fiction at http://www.mtgstory.com.
The enchanted player chooses a permanent to sacrifice from among the creatures and planeswalkers that player controls. You donâ€™t choose which type of permanent the player has to sacrifice.
The enchanted player canâ€™t choose to lose 5 life if they have a creature or planeswalker that can be sacrificed.