Thorn of Amethyst

Noncreature spells cost {1} more to cast.

Hushbringer

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

Clarion Conqueror

Flying
Activated abilities of artifacts, creatures, and planeswalkers can't be activated.

Sol Ring

Thalia, Guardian of Thraben

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

Void Mirror

Whenever a player casts a spell, if no colored mana was spent to cast it, counter that spell.

Chancellor of the Annex

You may reveal this card from your opening hand. If you do, when each opponent casts their first spell of the game, counter that spell unless that player pays {1}.
Flying
Whenever an opponent casts a spell, counter it unless that player pays {1}.

Swords to Plowshares

Exile target creature. Its controller gains life equal to its power.

Containment Priest

Flash
If a nontoken creature would enter and it wasn't cast, exile it instead.

Extraction Specialist

Lifelink
When this creature enters, return target creature card with mana value 2 or less from your graveyard to the battlefield. That creature can't attack or block for as long as you control this creature.

Archon of Emeria

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