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.)

Ordruun Veteran

Battalion — Whenever this creature and at least two other creatures attack, this creature gains double strike until end of turn. (It deals both first-strike and regular combat damage.)

Warmind Infantry

Battalion — Whenever this creature and at least two other creatures attack, this creature gets +2/+0 until end of turn.

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.

Skyknight Legionnaire

Shielded Passage

Prevent all damage that would be dealt to target creature this turn.

Armored Transport

Prevent all combat damage that would be dealt to this creature by creatures blocking it.

Boros Elite

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

Righteous Charge

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

Warclamp Mastiff

First strike (This creature deals combat damage before creatures without first strike.)

Mountain

Mark for Death

Target creature an opponent controls blocks this turn if able. Untap that creature. Other creatures that player controls can't block this turn.

Act of Treason

Gain control of target creature until end of turn. Untap that creature. It gains haste until end of turn. (It can attack and {T} this turn.)

Firemane Avenger

Flying
Battalion — Whenever this creature and at least two other creatures attack, this creature deals 3 damage to any target and you gain 3 life.

Bomber Corps

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

Plains

Firefist Striker

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

Fortress Cyclops

Whenever this creature attacks, it gets +3/+0 until end of turn.
Whenever this creature blocks, it gets +0/+3 until end of turn.

Aerial Maneuver

Target creature gets +1/+1 and gains flying and first strike until end of turn.

Court Street Denizen

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

Sunhome Guildmage

{1}{R}{W}: Creatures you control get +1/+0 until end of turn.
{2}{R}{W}: Create a 1/1 red and white Soldier creature token with haste.

Wojek Halberdiers

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

Mugging

Mugging deals 2 damage to target creature. That creature can't block this turn.

Ember Beast

This creature can't attack or block alone.

Boros Guildgate

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

Canyon Minotaur

Arrows of Justice

Arrows of Justice deals 4 damage to target attacking or blocking creature.

Daring Skyjek

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