Raise the Alarm

Create two 1/1 white Soldier creature tokens.

Relief Captain

When Relief Captain enters, support 3. (Put a +1/+1 counter on each of up to three other target creatures.)

Pacifism

Enchant creature
Enchanted creature can't attack or block.

Kor Castigator

Kor Castigator can't be blocked by Eldrazi Scions.

Tajuru Warcaller

Rally — Whenever Tajuru Warcaller or another Ally you control enters, creatures you control get +2/+2 until end of turn.

Allied Reinforcements

Create two 2/2 white Knight Ally creature tokens.

Expedition Envoy

Tranquil Expanse

Tranquil Expanse enters tapped.
{T}: Add {G} or {W}.

Travel Preparations

Put a +1/+1 counter on each of up to two target creatures.
Flashback {1}{W} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Veteran Warleader

Veteran Warleader's power and toughness are each equal to the number of creatures you control.
Tap another untapped Ally you control: Veteran Warleader gains your choice of first strike, vigilance, or trample until end of turn.

Forest

Plains

Blossoming Sands

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

Kor Bladewhirl

Rally — Whenever Kor Bladewhirl or another Ally you control enters, creatures you control gain first strike until end of turn.