D'Avenant Healer

{T}: This creature deals 1 damage to target attacking or blocking creature.
{T}: Prevent the next 1 damage that would be dealt to any target this turn.

Shield Dancer

{2}{W}: The next time target attacking creature would deal combat damage to this creature this turn, that creature deals that damage to itself instead.

Command Tower

{T}: Add one mana of any color in your commander's color identity.

Elite Archers

{T}: This creature deals 3 damage to target attacking or blocking creature.

Ben-Ben, Akki Hermit

{T}: Ben-Ben deals damage to target attacking creature equal to the number of untapped Mountains you control.

Mountain

D'Avenant Archer

{T}: This creature deals 1 damage to target attacking or blocking creature.

Crossbow Infantry

Unerring Sling

{3}, {T}, Tap an untapped creature you control: This artifact deals damage equal to the tapped creature's power to target attacking or blocking creature with flying.

Quilled Sliver

All Slivers have "{T}: This permanent deals 1 damage to target attacking or blocking creature."

Reconnaissance

{0}: Remove target attacking creature you control from combat and untap it. (If you activate during end of combat, the creature will untap after it deals combat damage.)

Avenger en-Dal

{2}{W}, {T}, Discard a card: Exile target attacking creature. Its controller gains life equal to its toughness.

Gravel Slinger

{T}: This creature deals 1 damage to target attacking or blocking creature.
Morph {1}{W} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.)

Desert

{T}: Add {C}.
{T}: This land deals 1 damage to target attacking creature. Activate only during the end of combat step.

Sinstriker's Will

Enchant creature
Enchanted creature has "{T}: This creature deals damage equal to its power to target attacking or blocking creature."

Catapult Squad

Tap two untapped Soldiers you control: This creature deals 2 damage to target attacking or blocking creature.

Plains

Eiganjo, Seat of the Empire

{T}: Add {W}.
Channel — {2}{W}, Discard this card: It deals 4 damage to target attacking or blocking creature. This ability costs {1} less to activate for each legendary creature you control.

Kongming's Contraptions

{T}: This creature deals 2 damage to target attacking creature. Activate only during the declare attackers step and only if you've been attacked this step.

Basandra, Battle Seraph

Flying
Players can't cast spells during combat.
{R}: Target creature attacks this turn if able.