Dauntless Veteran

Whenever this creature attacks, creatures you control get +1/+1 until end of turn.

Selfless Spirit

Flying
Sacrifice this creature: Creatures you control gain indestructible until end of turn.

Ardenvale Paladin

Adamant — If at least three white mana was spent to cast this spell, this creature enters with a +1/+1 counter on it.

Sigiled Paladin

First strike
Exalted (Whenever a creature you control attacks alone, that creature gets +1/+1 until end of turn.)

Gods Willing

Target creature you control gains protection from the color of your choice until end of turn. (It can't be blocked, targeted, dealt damage, enchanted, or equipped by anything of that color.)
Scry 1.

Pacifism

Enchant creature
Enchanted creature can't attack or block.

Day of Judgment

Righteous Cause

Whenever a creature attacks, you gain 1 life.

Plains

Angelic Page

Flying
{T}: Target attacking or blocking creature gets +1/+1 until end of turn.

Safe Passage

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

Serra Angel

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

Moon-Blessed Cleric

Divine Intervention — When this creature enters, you may search your library for an enchantment card, reveal it, then shuffle and put that card on top.

Dawnwing Marshal

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

Serra's Boon

Enchant creature
Enchanted creature gets +1/+2 as long as it's white. Otherwise, it gets -2/-1.

Holy Strength

Enchant creature
Enchanted creature gets +1/+2.

Angelsong

Prevent all combat damage that would be dealt this turn.
Cycling {2} ({2}, Discard this card: Draw a card.)

Serra's Embrace

Enchant creature
Enchanted creature gets +2/+2 and has flying and vigilance. (Attacking doesn't cause it to tap.)

Answered Prayers

Whenever a creature you control enters, you gain 1 life. If this enchantment isn't a creature, it becomes a 3/3 Angel creature with flying in addition to its other types until end of turn.

Daysquad Marshal

When this creature enters, create a 1/1 white Human Soldier creature token.

Angelic Guardian

Flying (This creature can't be blocked except by creatures with flying or reach.)
Whenever one or more creatures you control attack, they gain indestructible until end of turn. (Damage and effects that say "destroy" don't destroy them.)

Healer's Hawk

Flying
Lifelink (Damage dealt by this creature also causes you to gain that much life.)