Court Street Denizen

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

Heroic Reinforcements

Create two 1/1 white Soldier creature tokens. Until end of turn, creatures you control get +1/+1 and gain haste. (They can attack and {T} this turn.)

Pacifism

Enchant creature
Enchanted creature can't attack or block.

Plains

Thraben Valiant

Martial Glory

Target creature gets +3/+0 until end of turn.
Target creature gets +0/+3 until end of turn.

Hammer Dropper

Mentor (Whenever this creature attacks, put a +1/+1 counter on target attacking creature with lesser power.)

Baird, Steward of Argive

Vigilance
Creatures can't attack you or planeswalkers you control unless their controller pays {1} for each of those creatures.

Bomber Corps

Battalion — Whenever this creature and at least two other creatures attack, this creature deals 1 damage to any target.

Mountain

Firefist Striker

Battalion — Whenever this creature and at least two other creatures attack, target creature can't block this turn.

Yotian Frontliner

Whenever this creature attacks, another target creature you control gets +1/+1 until end of turn.
Unearth {W} ({W}: Return this card from your graveyard to the battlefield. It gains haste. Exile it at the beginning of the next end step or if it would leave the battlefield. Unearth only as a sorcery.)

Boros Guildgate

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

Baird, Argivian Recruiter

At the beginning of your end step, if you control a creature with power greater than its base power, create a 1/1 white Soldier creature token.

Recruitment Officer

{3}{W}: Look at the top four cards of your library. You may reveal a creature card with mana value 3 or less from among them and put it into your hand. Put the rest on the bottom of your library in a random order.

Sworn Companions

Create two 1/1 white Soldier creature tokens with lifelink.

Orim's Thunder

Kicker {R} (You may pay an additional {R} as you cast this spell.)
Destroy target artifact or enchantment. If this spell was kicked, it deals damage equal to that permanent's mana value to target creature.

Wind-Scarred Crag

This land enters tapped.
When this land enters, you gain 1 life.
{T}: Add {R} or {W}.

Foundry Champion

When this creature enters, it deals damage to any target equal to the number of creatures you control.
{R}: This creature gets +1/+0 until end of turn.
{W}: This creature gets +0/+1 until end of turn.

Mobilization

Soldier creatures have vigilance.
{2}{W}: Create a 1/1 white Soldier creature token.

Rescue Retriever

Flash
When this creature enters, put a +1/+1 counter on each other Soldier you control.
Prevent all damage that would be dealt to other attacking Soldiers you control.

Ambush Paratrooper

Flash
Flying
{5}: Creatures you control get +1/+1 until end of turn.

Wojek Halberdiers

Battalion — Whenever this creature and at least two other creatures attack, this creature gains first strike until end of turn.

Righteous Charge

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

Smite

Valiant Veteran

Other Soldiers you control get +1/+1.
{3}{W}{W}, Exile this card from your graveyard: Put a +1/+1 counter on each Soldier you control.

Boros Keyrune

{T}: Add {R} or {W}.
{R}{W}: This artifact becomes a 1/1 red and white Soldier artifact creature with double strike until end of turn. (It deals both first-strike and regular combat damage.)

Join Forces

Untap up to two target creatures. They each get +2/+2 until end of turn.

Glorious Charge

Creatures you control get +1/+1 until end of turn.

Boros Signet

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.)

Captain's Call

Create three 1/1 white Soldier creature tokens.

Boros Elite

Battalion — Whenever this creature and at least two other creatures attack, this creature gets +2/+2 until end of turn.