, , Sacrifice Moonsilver Key: Search your library for an artifact card with a mana ability or a basic land card, reveal it, put it into your hand, then shuffle.
Flavor
To restore the day-night balance, the Celestus mechanism’s Sungold Lock must be reunited with its long-lost key.
, 
, Sacrifice Moonsilver Key: Search your library for an artifact card with a mana ability or a basic land card, reveal it, put it into your hand, then shuffle.
