Have

Truefire Paladin

Vigilance
{R}{W}: This creature gets +2/+0 until end of turn.
{R}{W}: This creature gains first strike until end of turn.

Burning-Fist Minotaur

First strike
{1}{R}, Discard a card: This creature gets +2/+0 until end of turn.

Plains

Congregate

Target player gains 2 life for each creature on the battlefield.

Intimidation Bolt

Intimidation Bolt deals 3 damage to target creature. Other creatures can't attack this turn.

Spiteful Motives

Flash (You may cast this spell any time you could cast an instant.)
Enchant creature
Enchanted creature gets +3/+0 and has first strike.

Triumph of Gerrard

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.)
I, II — Put a +1/+1 counter on target creature you control with the greatest power.
III — Target creature you control with the greatest power gains flying, first strike, and lifelink until end of turn.

Assemble the Legion

At the beginning of your upkeep, put a muster counter on this enchantment. Then create a 1/1 red and white Soldier creature token with haste for each muster counter on this enchantment.

Titan's Strength

Target creature gets +3/+1 until end of turn. Scry 1. (Look at the top card of your library. You may put that card on the bottom.)

Mountain

Geist of the Moors

Sacred Foundry

({T}: Add {R} or {W}.)
As this land enters, you may pay 2 life. If you don't, it enters tapped.

Boros Challenger

Mentor (Whenever this creature attacks, put a +1/+1 counter on target attacking creature with lesser power.)
{2}{R}{W}: This creature gets +1/+1 until end of turn.

Borderland Marauder

Whenever this creature attacks, it gets +2/+0 until end of turn.

Kwende, Pride of Femeref

Double strike
Creatures you control with first strike have double strike.

Resurgence

Creatures you control gain first strike and vigilance until end of turn. After this main phase, there is an additional combat phase followed by an additional main phase.

Response

Response deals 5 damage to target attacking or blocking creature.

Response // Resurgence

Serra Angel

Flying
Vigilance (Attacking doesn't cause this creature to tap.)

Skyknight Legionnaire

Warmind Infantry

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

Marked by Honor

Enchant creature
Enchanted creature gets +2/+2 and has vigilance. (Attacking doesn't cause it to tap.)

Five-Alarm Fire

Whenever a creature you control deals combat damage, put a blaze counter on this enchantment.
Remove five blaze counters from this enchantment: It deals 5 damage to any target.

Griffin Sentinel

Boros Guildgate

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

Daring Skyjek

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

Madcap Skills

Enchant creature
Enchanted creature gets +3/+0 and has menace.

Ordeal of Heliod

Enchant creature
Whenever enchanted creature attacks, put a +1/+1 counter on it. Then if it has three or more +1/+1 counters on it, sacrifice this Aura.
When you sacrifice this Aura, you gain 10 life.

Boros Charm

Choose one —
• Boros Charm deals 4 damage to target player or planeswalker.
• Permanents you control gain indestructible until end of turn.
• Target creature gains double strike until end of turn.

Sunhome Stalwart

First strike (This creature deals combat damage before creatures without first strike.)
Mentor (Whenever this creature attacks, put a +1/+1 counter on target attacking creature with lesser power.)

Warlord's Fury

Creatures you control gain first strike until end of turn.
Draw a card.

Chained to the Rocks

Enchant Mountain you control
When this Aura enters, exile target creature an opponent controls until this Aura leaves the battlefield. (That creature returns under its owner's control.)

Wall of Swords

Defender (This creature can't attack.)
Flying

Lightning Helix

Lightning Helix deals 3 damage to any target and you gain 3 life.

Concordia Pegasus

Justice Strike

Target creature deals damage to itself equal to its power.

Master of Diversion

Whenever this creature attacks, tap target creature defending player controls.

Aurelia, the Warleader

Flying, vigilance, haste
Whenever Aurelia attacks for the first time each turn, untap all creatures you control. After this phase, there is an additional combat phase.

Anax and Cymede

First strike, vigilance
Heroic — Whenever you cast a spell that targets Anax and Cymede, creatures you control get +1/+1 and gain trample until end of turn.

Boros Reckoner

Whenever this creature is dealt damage, it deals that much damage to any target.
{R/W}: This creature gains first strike until end of turn.

Shock

Light of the Legion

Flying
Mentor (Whenever this creature attacks, put a +1/+1 counter on target attacking creature with lesser power.)
When this creature dies, put a +1/+1 counter on each white creature you control.

Parhelion Patrol

Flying
Vigilance (Attacking doesn't cause this creature to tap.)
Mentor (Whenever this creature attacks, put a +1/+1 counter on target attacking creature with lesser power.)