Rhystic Study

Whenever an opponent casts a spell, you may draw a card unless that player pays {1}.

Dissipation Field

Whenever a permanent deals damage to you, return it to its owner's hand.

Sphere of Law

If a red source would deal damage to you, prevent 2 of that damage.

Sphere of Grace

If a black source would deal damage to you, prevent 2 of that damage.

Hallow

Prevent all damage target spell would deal this turn. You gain life equal to the damage prevented this way.

Sphere of Safety

Creatures can't attack you or planeswalkers you control unless their controller pays {X} for each of those creatures, where X is the number of enchantments you control.

Smothering Tithe

Whenever an opponent draws a card, that player may pay {2}. If the player doesn't, you create a Treasure token. (It's an artifact with "{T}, Sacrifice this artifact: Add one mana of any color.")

Sphere of Reason

If a blue source would deal damage to you, prevent 2 of that damage.

Teleportation Circle

At the beginning of your end step, exile up to one target artifact or creature you control, then return that card to the battlefield under its owner's control.

Insight

Whenever an opponent casts a green spell, you draw a card.

Baleful Stare

Target opponent reveals their hand. You draw a card for each Mountain and red card in it.

Acid Rain

Shifting Sky

As Shifting Sky enters, choose a color.
All nonland permanents are the chosen color.

Hibernation

Return all green permanents to their owners' hands.

Dream Tides

Creatures don't untap during their controllers' untap steps.
At the beginning of each player's upkeep, that player may choose any number of tapped nongreen creatures they control and pay {2} for each creature chosen this way. If the player does, untap those creatures.

High Seas

Red creature spells and green creature spells cost {1} more to cast.

Chill

Volcanic Eruption

Destroy X target Mountains. Volcanic Eruption deals damage to each creature and each player equal to the number of Mountains put into a graveyard this way.

Urborg, Tomb of Yawgmoth

Each land is a Swamp in addition to its other land types.

Karma

At the beginning of each player's upkeep, Karma deals damage to that player equal to the number of Swamps they control.

Yavimaya, Cradle of Growth

Each land is a Forest in addition to its other land types.

Withering Gaze

Target opponent reveals their hand. You draw a card for each Forest and green card in it.

Shimmer

As Shimmer enters, choose a land type.
Each land of the chosen type has phasing. (It phases in or out before its controller untaps during each of their untap steps. While it's phased out, it's treated as though it doesn't exist.)

Crystal Spray

Change the text of target spell or permanent by replacing all instances of one color word with another or one basic land type with another until end of turn.
Draw a card.

Avacyn, Angel of Hope

Flying, vigilance, indestructible
Other permanents you control have indestructible.

Lifetap

Whenever a Forest an opponent controls becomes tapped, you gain 1 life.

Heliod, the Radiant Dawn

When Heliod, the Radiant Dawn enters, return target enchantment card that isn't a God from your graveyard to your hand.
{3}{U/P}: Transform Heliod, the Radiant Dawn. Activate only as a sorcery. ({U/P} can be paid with either {U} or 2 life.)

Heliod, the Warped Eclipse

You may cast spells as though they had flash.
Spells you cast cost {1} less to cast for each card your opponents have drawn this turn.

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