Swift Response

Royal Trooper

Whenever Royal Trooper blocks, it gets +2/+2 until end of turn.

Take Vengeance

Fabled Hero

Double strike
Heroic — Whenever you cast a spell that targets Fabled Hero, put a +1/+1 counter on Fabled Hero.

Expose Evil

Tap up to two target creatures.
Investigate. (Create a Clue token. It's an artifact with "{2}, Sacrifice this artifact: Draw a card.")

Steam Catapult

{T}: Destroy target tapped creature. Activate only during your turn, before attackers are declared.

Segovian Angel

Smite

Sheer Drop

Destroy target tapped creature.
Awaken 3—{5}{W} (If you cast this spell for {5}{W}, also put three +1/+1 counters on target land you control and it becomes a 0/0 Elemental creature with haste. It's still a land.)

Swift Reckoning

Spell mastery — If there are two or more instant and/or sorcery cards in your graveyard, you may cast Swift Reckoning as though it had flash. (You may cast it any time you could cast an instant.)
Destroy target tapped creature.

Crystal Chimes

{3}, {T}, Sacrifice Crystal Chimes: Return all enchantment cards from your graveyard to your hand.

Court Street Denizen

Whenever another white creature you control enters, tap target creature an opponent controls.

Authority of the Consuls

Creatures your opponents control enter tapped.
Whenever a creature an opponent controls enters, you gain 1 life.

Rebuke

Akroan Jailer

Kor Hookmaster

When Kor Hookmaster enters, tap target creature an opponent controls. That creature doesn't untap during its controller's next untap step.

Kinjalli's Sunwing

Flying
Creatures your opponents control enter tapped.

Slash of Talons

Slash of Talons deals 2 damage to target attacking or blocking creature.

Turn the Tables

All combat damage that would be dealt to you this turn is dealt to target attacking creature instead.

Gideon's Reproach

Gideon's Reproach deals 4 damage to target attacking or blocking creature.

Alaborn Cavalier

Whenever Alaborn Cavalier attacks, you may tap target creature.

Ballynock Trapper

{T}: Tap target creature.
Whenever you cast a white spell, you may untap Ballynock Trapper.

Benalish Trapper

Deftblade Elite

Provoke (Whenever this creature attacks, you may have target creature defending player controls untap and block it if able.)
{1}{W}: Prevent all combat damage that would be dealt to and dealt by Deftblade Elite this turn.

Seal Away

Flash
When Seal Away enters, exile target tapped creature an opponent controls until Seal Away leaves the battlefield.

Citadel Siege

As Citadel Siege enters, choose Khans or Dragons.
• Khans — At the beginning of combat on your turn, put two +1/+1 counters on target creature you control.
• Dragons — At the beginning of combat on each opponent's turn, tap target creature that player controls.

Puncturing Light

Destroy target attacking or blocking creature with power 3 or less.

Celestial Enforcer

{1}{W}, {T}: Tap target creature. Activate only if you control a creature with flying.

Argivian Find

Return target artifact or enchantment card from your graveyard to your hand.

Blind Obedience

Extort (Whenever you cast a spell, you may pay {W/B}. If you do, each opponent loses 1 life and you gain that much life.)
Artifacts and creatures your opponents control enter tapped.

Blinding Mage

Zhalfirin Decoy

{T}: Tap target creature. Activate only if you had a creature enter the battlefield under your control this turn.