You have hexproof. (You can't be the target of spells or abilities your opponents control.)

Whenever Agrus Kos, Wojek Veteran attacks, attacking red creatures get +2/+0 and attacking white creatures get +0/+2 until end of turn.

Whenever Akroan Hoplite attacks, it gets +X/+0 until end of turn, where X is the number of attacking creatures you control.

Flying

At the beginning of each combat, choose first strike, vigilance, or lifelink. Creatures you control gain that ability until end of turn.

If an effect would create one or more tokens under your control, it creates twice that many of those tokens instead.

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

Creatures you control have first strike.

Creatures your opponents control lose first strike and can't have or gain first strike.

{T}, Pay 1 life, Sacrifice Arid Mesa: Search your library for a Mountain or Plains card, put it onto the battlefield, then shuffle.

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

Flying, vigilance, haste

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

Other red creatures you control get +1/+1.

Other white creatures you control get +1/+1.

Whenever you cast a red spell, Balefire Liege deals 3 damage to target player or planeswalker.

Whenever you cast a white spell, you gain 3 life.

Attacking creatures you control have double strike.

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.

Battalion -- Whenever Boros Elite and at least two other creatures attack, Boros Elite gets +2/+2 until end of turn.

Boros Garrison enters the battlefield tapped.

When Boros Garrison enters the battlefield, return a land you control to its owner's hand.

{T}: Add {R}{W}.

Boros Guildgate enters the battlefield tapped.

{T}: Add {R} or {W}.

({R/W} can be paid with either {R} or {W}.)

First strike

Double strike

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

Other Soldier creatures you control get +1/+1 and have vigilance.

When Captain of the Watch enters the battlefield, create three 1/1 white Soldier creature tokens.

Clifftop Retreat enters the battlefield tapped unless you control a Mountain or a Plains.

{T}: Add {R} or {W}.

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

Flying, lifelink

Heroic -- Whenever you cast a spell that targets Dawnbringer Charioteers, put a +1/+1 counter on Dawnbringer Charioteers.

{T}, Sacrifice Evolving Wilds: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

Double strike

Creatures you control have haste. (They can attack and {T} as soon as they come under your control.)

Other Soldier creatures get +1/+1 and have first strike. (They deal combat damage before creatures without first strike.)

Create X 2/2 white Soldier creature tokens with vigilance. If X is 10 or more, also create X 4/4 white Angel creature tokens with flying and vigilance.

Flying

Battalion -- Whenever Firemane Avenger and at least two other creatures attack, Firemane Avenger deals 3 damage to any target and you gain 3 life.

Flying

Whenever you attack with two or more creatures, draw a card.

Whenever another player attacks with two or more creatures, they draw a card if none of those creatures attacked you.

Equipped creature has flying and haste.

Equip {2} ({2}: Attach to target creature you control. Equip only as a sorcery.)

Battalion -- Whenever Frontline Medic and at least two other creatures attack, creatures you control gain indestructible until end of turn.

Sacrifice Frontline Medic: Counter target spell with {X} in its mana cost unless its controller pays {3}.

Whenever you attack with two or more non-Gideon creatures, put a +1/+1 counter on each of those creatures.

+2: Until end of turn, Gideon, the Oathsworn becomes a 5/5 white Soldier creature that's still a planeswalker. Prevent all damage that would be dealt to him this turn. (He can't attack if he was cast this turn.)

-9: Exile Gideon, the Oathsworn and each creature your opponents control.

Flying, first strike

If a source would deal damage to an opponent or a permanent an opponent controls, that source deals double that damage to that player or permanent instead.

If a source would deal damage to you or a permanent you control, prevent half that damage, rounded up.

As long as it's your turn, creatures you control get +2/+0.

As long as it's not your turn, creatures you control get +0/+2.

Whenever Haazda Marshal and at least two other creatures attack, create a 1/1 white Soldier creature token with lifelink.

Untap all creatures and gain control of them until end of turn. They gain haste until end of turn.

Indestructible

As long as your devotion to red and white is less than seven, Iroas isn't a creature.

Creatures you control have menace.

Prevent all damage that would be dealt to attacking creatures you control.

At the beginning of each opponent's end step, if that player controls more creatures than you, create a 1/1 white Soldier creature token.

At the beginning of each opponent's end step, if that player controls more lands than you, you may search your library for a basic Plains card, put it onto the battlefield tapped, then shuffle.

At end of combat, if Kytheon, Hero of Akros and at least two other creatures attacked this combat, exile Kytheon, then return him to the battlefield transformed under his owner's control.

{2}{W}: Kytheon gains indestructible until end of turn.

+2: Up to one target creature an opponent controls attacks Gideon, Battle-Forged during its controller's next turn if able.

+1: Until your next turn, target creature gains indestructible. Untap that creature.

0: Until end of turn, Gideon, Battle-Forged becomes a 4/4 Human Soldier creature with indestructible that's still a planeswalker. Prevent all damage that would be dealt to him this turn.

Haste

Battalion -- Whenever Legion Loyalist and at least two other creatures attack, creatures you control gain first strike and trample until end of turn and can't be blocked by creature tokens this turn.

Red creatures you control get +1/+0.

White creatures you control get +0/+1.

{R}{W}, Exile Legion's Initiative: Exile all creatures you control. At the beginning of the next combat, return those cards to the battlefield under their owner's control and those creatures gain haste until end of turn.

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

Whenever Makeshift Battalion and at least two other creatures attack, put a +1/+1 counter on Makeshift Battalion.

Mizzium Mortars deals 4 damage to target creature you don't control.

Overload {3}{R}{R}{R} (You may cast this spell for its overload cost. If you do, change "target" in its text to "each.")

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

New Benalia enters the battlefield tapped.

When New Benalia enters the battlefield, scry 1. (Look at the top card of your library. You may put that card on the bottom of your library.)

{T}: Add {W}.

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

Whenever Odric, Master Tactician and at least three other creatures attack, you choose which creatures block this combat and how those creatures block.

(Gain the next level as a sorcery to add its ability.)

Spells your opponents cast during your turn cost {1} more to cast.

{2}{W}: Level 2

Creatures you control get +1/+1.

{4}{W}: Level 3

Whenever you attack, until end of turn, target attacking creature gets +1/+1 for each other attacking creature and gains double strike.

When Path of Mettle enters the battlefield, it deals 1 damage to each creature that doesn't have first strike, double strike, vigilance, or haste.

Whenever you attack with at least two creatures that have first strike, double strike, vigilance, and/or haste, transform Path of Mettle.

(Transforms from Path of Mettle.)

{T}: Add one mana of any color.

{1}{R}, {T}: Metzali, Tower of Triumph deals 2 damage to each opponent.

{2}{W}, {T}: Choose a creature at random that attacked this turn. Destroy that creature.

Equipped creature gets +1/+1 for each creature you control.

Equip {4} ({4}: Attach to target creature you control. Equip only as a sorcery.)

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

Destroy all nonland permanents.

First strike

Whenever Precinct Captain deals combat damage to a player, create a 1/1 white Soldier creature token.

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

Whenever Preeminent Captain attacks, you may put a Soldier creature card from your hand onto the battlefield tapped and attacking.

Flash

When Rescue Retriever enters the battlefield, put a +1/+1 counter on each other Soldier you control.

Prevent all damage that would be dealt to other attacking Soldiers you control.

({T}: Add {R} or {W}.)

As Sacred Foundry enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.

({T}: Add {R} or {W}.)

Sacred Peaks enters the battlefield tapped.

Prevent all damage that would be dealt to you and creatures you control this turn.

Flying

Whenever Skyknight Vanguard attacks, create a 1/1 white Soldier creature token that's tapped and attacking.

{T}: Add {C}.

{R}{W}, {T}: Target creature gets +2/+0 and gains vigilance and haste until end of turn.

{T}: Add {C}{C}.

Trample, lifelink, haste

At the beginning of the end step, sacrifice Spark Trooper.

Double strike, vigilance, trample

Equipped creature gets +2/+0 and has first strike, vigilance, trample, and haste.

Equip {3}

Indestructible

Battalion -- Whenever Tajic, Blade of the Legion and at least two other creatures attack, Tajic gets +5/+5 until end of turn.

Haste

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

Prevent all noncombat damage that would be dealt to other creatures you control.

{R}{W}: Tajic, Legion's Edge gains first strike until end of turn.

Teetering Peaks enters the battlefield tapped.

When Teetering Peaks enters the battlefield, target creature gets +2/+0 until end of turn.

{T}: Add {R}.

Temple of Triumph enters the battlefield tapped.

When Temple of Triumph enters the battlefield, scry 1.

{T}: Add {R} or {W}.

Put all creatures on the bottom of their owners' libraries.

Miracle {W} (You may cast this card for its miracle cost when you draw it if it's the first card you drew this turn.)

{T}, Sacrifice Terramorphic Expanse: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

First strike

Creatures and nonbasic lands your opponents control enter the battlefield tapped.

Thunderous Wrath deals 5 damage to any target.

Miracle {R} (You may cast this card for its miracle cost when you draw it if it's the first card you drew this turn.)

Other Soldiers you control get +1/+1.

{3}{W}{W}, Exile Valiant Veteran from your graveyard: Put a +1/+1 counter on each Soldier you control.

Vivid Meadow enters the battlefield tapped with two charge counters on it.

{T}: Add {W}.

{T}, Remove a charge counter from Vivid Meadow: Add one mana of any color.

Warleader's Helix deals 4 damage to any target and you gain 4 life.

Whenever a creature enters the battlefield under your control, it deals damage equal to its power to any target.

Target creature you control gets +1/+0 and gains first strike until end of turn.

Overload {1}{R} (You may cast this spell for its overload cost. If you do, change its text by replacing all instances of "target" with "each.")

Wind-Scarred Crag enters the battlefield tapped.

When Wind-Scarred Crag enters the battlefield, you gain 1 life.

{T}: Add {R} or {W}.

Hideaway 4 (When this land enters the battlefield, look at the top four cards of your library, exile one face down, then put the rest on the bottom in a random order.)

Windbrisk Heights enters the battlefield tapped.

{T}: Add {W}.

{W}, {T}: You may play the exiled card without paying its mana cost if you attacked with three or more creatures this turn.

Battalion -- Whenever Wojek Halberdiers and at least two other creatures attack, Wojek Halberdiers gains first strike until end of turn.