Secret Door

Defender
{4}{U}: Venture into the dungeon. Activate only as a sorcery. (Enter the first room or advance to the next room.)

Careful Study

Explore

You may play an additional land this turn.
Draw a card.

Island

Lifespark Spellbomb

{G}, Sacrifice Lifespark Spellbomb: Until end of turn, target land becomes a 3/3 creature that's still a land.
{1}, Sacrifice Lifespark Spellbomb: Draw a card.

Fertile Ground

Enchant land
Whenever enchanted land is tapped for mana, its controller adds an additional one mana of any color.

Forest

Freed from the Real

Enchant creature
{U}: Tap enchanted creature.
{U}: Untap enchanted creature.

Brave the Wilds

Bargain (You may sacrifice an artifact, enchantment, or token as you cast this spell.)
If this spell was bargained, target land you control becomes a 3/3 Elemental creature with haste that's still a land.
Search your library for a basic land card, reveal it, put it into your hand, then shuffle.

Many Partings

Search your library for a basic land card, reveal it, put it into your hand, then shuffle. Create a Food token. (It's an artifact with "{2}, {T}, Sacrifice this artifact: You gain 3 life.")

Arcane Denial

Counter target spell. Its controller may draw up to two cards at the beginning of the next turn's upkeep.
You draw a card at the beginning of the next turn's upkeep.