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 Ordeal of Heliod.
When you sacrifice Ordeal of Heliod, you gain 10 life.

Hearthfire Hobgoblin

Hero of Bladehold

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

Champion of the Parish

Whenever another Human enters the battlefield under your control, put a +1/+1 counter on Champion of the Parish.

Obelisk of Urd

Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for {1} or one mana of that creature's color.)
As Obelisk of Urd enters the battlefield, choose a creature type.
Creatures you control of the chosen type get +2/+2.

Veteran Swordsmith

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

Holy Strength

Enchant creature
Enchanted creature gets +1/+2.

Paragon of New Dawns

Other white creatures you control get +1/+1.
{W}, {T}: Another target white creature you control gains vigilance until end of turn. (Attacking doesn't cause it to tap.)

Ajani, Caller of the Pride

+1: Put a +1/+1 counter on up to one target creature.
−3: Target creature gains flying and double strike until end of turn.
−8: Create X 2/2 white Cat creature tokens, where X is your life total.

Safe Passage

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

Plains

Boros Elite

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

Pacifism

Enchant creature
Enchanted creature can't attack or block.

Righteousness

Target blocking creature gets +7/+7 until end of turn.

Veteran Armorsmith

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

Unmake

Doomed Traveler

When Doomed Traveler dies, create a 1/1 white Spirit creature token with flying.

Armored Ascension

Enchant creature
Enchanted creature gets +1/+1 for each Plains you control and has flying.