Hidden Strings

You may tap or untap target permanent, then you may tap or untap another target permanent. Cipher (Then you may exile this spell card encoded on a creature you control. Whenever that creature deals combat damage to a player, its controller may cast a copy of the encoded card without paying its mana cost.)

Ugin, the Spirit Dragon

+2: Ugin, the Spirit Dragon deals 3 damage to target creature or player. -X: Exile each permanent with converted mana cost X or less that's one or more colors. -10: You gain 7 life, draw seven cards, then put up to seven permanent cards from your hand onto the battlefield.

Thespian's Stage

{T}: Add {1} to your mana pool. {2}, {T}: Thespian's Stage becomes a copy of target land and gains this ability.

Dig Through Time

Delve (Each card you exile from your graveyard while casting this spell pays for {1}.) Look at the top seven cards of your library. Put two of them into your hand and the rest on the bottom of your library in any order.

Omniscience

You may cast nonland cards from your hand without paying their mana costs.

Yavimaya Coast

{T}: Add {1} to your mana pool. {T}: Add {G} or {U} to your mana pool. Yavimaya Coast deals 1 damage to you.

Sylvan Scrying

Pore Over the Pages

Botanical Sanctum

Vizier of Tumbling Sands

Growth Spiral

Draw a card. You may put a land card from your hand onto the battlefield.

Breeding Pool

({T}: Add {G} or {U}.) As Breeding Pool enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.

Arboreal Grazer

Reach When Arboreal Grazer enters the battlefield, you may put a land card from your hand onto the battlefield tapped.

Lotus Field

Hexproof Lotus Field enters the battlefield tapped. When Lotus Field enters the battlefield, sacrifice two lands. {T}: Add three mana of any one color.

Temple of Mystery

Temple of Mystery enters the battlefield tapped. When Temple of Mystery enters the battlefield, scry 1. {T}: Add {G} or {U}.

Once Upon a Time

If this spell is the first spell you've cast this game, you may cast it without paying its mana cost. Look at the top five cards of your library. You may reveal a creature or land card from among them and put it into your hand. Put the rest on the bottom of your library in a random order.

Forest

({T}: Add {G}.)