Enchantment, 2U (3) At the beginning of your upkeep, if you have 5 life or less, sacrifice Second Chance. If you do, take an extra turn after this one.1 The greatest gift is the opportunity to right one's wrongs.
Illus. Mark Tedin
The ability will only trigger if you have 5 or less life at the beginning of upkeep. This is checked again at the start of resolution and nothing happens if you do not still have 5 or less life. [D'Angelo 1999/05/01]
It is not optional. [D'Angelo 1999/02/13]
On resolution of the trigger you have to sacrifice this card if you have 5 life or less. If you cannot (because it is not in play, for example), then nothing happens. [WotC Rules Team 1999/03/18]
If multiple "extra turn" effects resolve in the same turn, take them in the reverse of the order that the effects resolved. [CompRules 2002/02/20 - 300.6]
Urza's Legacy
(Rare)