Archon of Emeria

Flying
Each player can't cast more than one spell each turn.
Nonbasic lands your opponents control enter tapped.

Plains

Ethersworn Canonist

Each player who has cast a nonartifact spell this turn can't cast additional nonartifact spells.

Hushbringer

Flying, lifelink
Creatures entering or dying don't cause abilities to trigger.

Thalia, Guardian of Thraben

First strike
Noncreature spells cost {1} more to cast.

Eidolon of Rhetoric

Each player can't cast more than one spell each turn.

Mountain

Vryn Wingmare

Flying
Noncreature spells cost {1} more to cast.

Glowrider

Noncreature spells cost {1} more to cast.

Damping Sphere

If a land is tapped for two or more mana, it produces {C} instead of any other type and amount.
Each spell a player casts costs {1} more to cast for each other spell that player has cast this turn.

Strict Proctor

Flying
Whenever a permanent entering causes a triggered ability to trigger, counter that ability unless its controller pays {2}.

Deafening Silence

Each player can't cast more than one noncreature spell each turn.

Queen Kayla bin-Kroog

{4}, {T}: Discard all the cards in your hand, then draw that many cards. You may choose an artifact or creature card with mana value 1 you discarded this way, then do the same for artifact or creature cards with mana values 2 and 3. Return those cards to the battlefield. Activate only as a sorcery.