Wind-Scarred Crag

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

Martial Glory

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

Evolving Wilds

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

Boros Recruit

({R/W} can be paid with either {R} or {W}.)
First strike

Plains

Goblin Legionnaire

{R}, Sacrifice this creature: It deals 2 damage to any target.
{W}, Sacrifice this creature: Prevent the next 2 damage that would be dealt to any target this turn.

Battlegate Mimic

Whenever you cast a spell that's both red and white, this creature has base power and toughness 4/2 until end of turn and gains first strike until end of turn.

Cerodon Yearling

Scourge of the Nobilis

Enchant creature
As long as enchanted creature is red, it gets +1/+1 and has "{R/W}: This creature gets +1/+0 until end of turn."
As long as enchanted creature is white, it gets +1/+1 and has lifelink. (Damage dealt by the creature also causes its controller to gain that much life.)

Make Your Mark

Target creature gets +1/+0 until end of turn. When that creature dies this turn, create a 3/2 red and white Spirit creature token.

Duergar Assailant

Sacrifice this creature: It deals 1 damage to target attacking or blocking creature.

Squee's Embrace

Enchant creature
Enchanted creature gets +2/+2.
When enchanted creature dies, return that card to its owner's hand.

Tenth District Legionnaire

Haste
Whenever you cast a spell that targets this creature, put a +1/+1 counter on this creature, then scry 1.

Double Cleave

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