Lead by Example

Support 2. (Put a +1/+1 counter on each of up to two target creatures.)

Plains

Steppe Glider

Flying, vigilance
{1}{W}: Target creature with a +1/+1 counter on it gains flying and vigilance until end of turn.

Cliffside Lookout

{4}{W}: Creatures you control get +1/+1 until end of turn.

Expedition Raptor

Flying
When Expedition Raptor enters, support 2. (Put a +1/+1 counter on each of up to two other target creatures.)

Joraga Auxiliary

{4}{G}{W}: Support 2. (Put a +1/+1 counter on each of up to two other target creatures.)

Iona's Blessing

Enchant creature
Enchanted creature gets +2/+2, has vigilance, and can block an additional creature each combat.

Kor Castigator

Kor Castigator can't be blocked by Eldrazi Scions.

Oran-Rief Invoker

{8}: Oran-Rief Invoker gets +5/+5 and gains trample until end of turn.

Kitesail Scout

Mighty Leap

Target creature gets +2/+2 and gains flying until end of turn.

Relief Captain

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

Expedition Envoy

Evolving Wilds

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

Tranquil Expanse

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

Forest

Angel of Renewal

Flying
When Angel of Renewal enters, you gain 1 life for each creature you control.

Makindi Aeronaut

Allied Reinforcements

Create two 2/2 white Knight Ally creature tokens.

Kor Sky Climber

{1}{W}: Kor Sky Climber gains flying until end of turn.

Shadow Glider

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.

Immolating Glare

Gladehart Cavalry

When Gladehart Cavalry enters, support 6. (Put a +1/+1 counter on each of up to six other target creatures.)
Whenever a creature you control with a +1/+1 counter on it dies, you gain 2 life.

Saddleback Lagac

When Saddleback Lagac enters, support 2. (Put a +1/+1 counter on each of up to two other target creatures.)

Isolation Zone

When Isolation Zone enters, exile target creature or enchantment an opponent controls until Isolation Zone leaves the battlefield. (That permanent returns under its owner's control.)

Shoulder to Shoulder

Support 2. (Put a +1/+1 counter on each of up to two target creatures.)
Draw a card.