Snapcaster Mage [The List] SH6 The key did not work

The key did not work on a single lock

−3: Return up to two target land cards from your graveyard to the battlefield

Set: Sun & Moon: Base Set Type: Colorless Rarity: Promo Retreat cost: Colorless

these creatures have abilities that will create a challenge fit for the gods

When you remove the last counter from All Hallow's Eve

Snapcaster Mage [The List] SH6 The key did not workSet: The List Type: Creature Human Wizard Rarity: Rare Cost: {1}{U} Flash When Snapcaster Mage enters the battlefield, target instant or sorcery card in your graveyard gains flashback until end of turn. The flashback cost is equal to its mana cost. (You may cast that card from your graveyard for its flashback cost. Then exile it.)