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.

Archangel Elspeth

+1: Create a 1/1 white Soldier creature token with lifelink.
−2: Put two +1/+1 counters on target creature. It becomes an Angel in addition to its other types and gains flying.
−6: Return all nonland permanent cards with mana value 3 or less from your graveyard to the battlefield.

Plains

Path to Exile

Exile target creature. Its controller may search their library for a basic land card, put that card onto the battlefield tapped, then shuffle.

Borrowed Time

When this enchantment enters, exile target nonland permanent an opponent controls until this enchantment leaves the battlefield.

Veteran Swordsmith

Other Soldier creatures you control get +1/+0.

Mobilization

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

Martial Coup

Create X 1/1 white Soldier creature tokens. If X is 5 or more, destroy all other creatures.

Hero of Bladehold

Battle cry (Whenever this creature attacks, each other attacking creature gets +1/+0 until end of turn.)
Whenever this creature attacks, create two 1/1 white Soldier creature tokens that are tapped and attacking.

Preeminent Captain

First strike (This creature deals combat damage before creatures without first strike.)
Whenever this creature attacks, you may put a Soldier creature card from your hand onto the battlefield tapped and attacking.

Ballyrush Banneret

Kithkin spells and Soldier spells you cast cost {1} less to cast.

Archetype of Courage

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