Arrest

Enchant creature
Enchanted creature can't attack or block, and its activated abilities can't be activated.

Lyev Skyknight

Flying
When this creature enters, detain target nonland permanent an opponent controls. (Until your next turn, that permanent can't attack or block and its activated abilities can't be activated.)

Lyev Decree

Detain up to two target creatures your opponents control. (Until your next turn, those creatures can't attack or block and their activated abilities can't be activated.)

Lavinia of the Tenth

Protection from red
When Lavinia enters, detain each nonland permanent your opponents control with mana value 4 or less. (Until your next turn, those permanents can't attack or block and their activated abilities can't be activated.)

Avenging Arrow

Destroy target creature that dealt damage this turn.

Serve

Target creature gets -6/-0 until end of turn.
Fuse (You may cast one or both halves of this card from your hand.)

Protect

Target creature gets +2/+4 until end of turn.
Fuse (You may cast one or both halves of this card from your hand.)

Protect // Serve

Azorius Guildgate

This land enters tapped.
{T}: Add {W} or {U}.

Azorius Justiciar

When this creature enters, detain up to two target creatures your opponents control. (Until your next turn, those creatures can't attack or block and their activated abilities can't be activated.)

Azorius Arrester

When this creature enters, detain target creature an opponent controls. (Until your next turn, that creature can't attack or block and its activated abilities can't be activated.)

Stealer of Secrets

Whenever this creature deals combat damage to a player, draw a card.

Island

Soulsworn Spirit

This creature can't be blocked.
When this creature enters, detain target creature an opponent controls. (Until your next turn, that creature can't attack or block and its activated abilities can't be activated.)

Haazda Snare Squad

Whenever this creature attacks, you may pay {W}. If you do, tap target creature an opponent controls.

Righteous Charge

Creatures you control get +2/+2 until end of turn.

Wind Drake

Restore the Peace

Return each creature that dealt damage this turn to its owner's hand.

Martial Law

At the beginning of your upkeep, detain target creature an opponent controls. (Until your next turn, that creature can't attack or block and its activated abilities can't be activated.)

Plains

Jelenn Sphinx

Flying, vigilance
Whenever this creature attacks, other attacking creatures get +1/+1 until end of turn.

Azorius Cluestone

{T}: Add {W} or {U}.
{W}{U}, {T}, Sacrifice this artifact: Draw a card.

Ascended Lawmage

Flying
Hexproof (This creature can't be the target of spells or abilities your opponents control.)

Silvercoat Lion

Sunspire Gatekeepers

When this creature enters, if you control two or more Gates, create a 2/2 white Knight creature token with vigilance.