Double Cleave

Target creature gains double strike until end of turn. (It deals both first-strike and regular combat damage.)

Standard Bearer

While an opponent is choosing targets as part of casting a spell they control or activating an ability they control, that player must choose at least one Flagbearer on the battlefield if able.

Emerge Unscathed

Target creature you control gains protection from the color of your choice until end of turn.
Rebound (If you cast this spell from your hand, exile it as it resolves. At the beginning of your next upkeep, you may cast this card from exile without paying its mana cost.)

Plains

Wingsteed Rider

Flying
Heroic — Whenever you cast a spell that targets this creature, put a +1/+1 counter on this creature.

Conviction

Enchant creature
Enchanted creature gets +1/+3.
{W}: Return this Aura to its owner's hand.

Unmake

Tethmos High Priest

Heroic — Whenever you cast a spell that targets this creature, return target creature card with mana value 2 or less from your graveyard to the battlefield.

Heliod's Pilgrim

When this creature enters, you may search your library for an Aura card, reveal it, put it into your hand, then shuffle.

Beckon Apparition

Exile target card from a graveyard. Create a 1/1 white and black Spirit creature token with flying.

Secluded Steppe

This land enters tapped.
{T}: Add {W}.
Cycling {W} ({W}, Discard this card: Draw a card.)

Lagonna-Band Trailblazer

Heroic — Whenever you cast a spell that targets this creature, put a +1/+1 counter on it.

Defiant Strike

Target creature gets +1/+0 until end of turn.
Draw a card.

Pentarch Ward

Enchant creature
As this Aura enters, choose a color.
When this Aura enters, draw a card.
Enchanted creature has protection from the chosen color. This effect doesn't remove this Aura.

Akroan Skyguard

Seeker of the Way

Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)
Whenever you cast a noncreature spell, this creature gains lifelink until end of turn.

Shelter

Target creature you control gains protection from the color of your choice until end of turn.
Draw a card.

Rebellious Strike

Target creature gets +3/+0 until end of turn.
Draw a card.

Setessan Battle Priest

Heroic — Whenever you cast a spell that targets this creature, you gain 2 life.

Prismatic Strands

Prevent all damage that sources of the color of your choice would deal this turn.
Flashback—Tap an untapped white creature you control. (You may cast this card from your graveyard for its flashback cost. Then exile it.)