White Knight

First strike (This creature deals combat damage before creatures without first strike.)
Protection from black (This creature can't be blocked, targeted, dealt damage, or enchanted by anything black.)

Swords to Plowshares

Exile target creature. Its controller gains life equal to its power.

Tundra Wolves

First strike (This creature deals combat damage before creatures without first strike.)

Strip Mine

{T}: Add {C}.
{T}, Sacrifice this land: Destroy target land.

Crusade

Serra Angel

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

Disenchant

Plains

Armageddon

Balance

Each player chooses a number of lands they control equal to the number of lands controlled by the player who controls the fewest, then sacrifices the rest. Players discard cards and sacrifice creatures the same way.

Savannah Lions

Order of Leitbur

Protection from black
{W}: This creature gains first strike until end of turn.
{W}{W}: This creature gets +1/+0 until end of turn.

Wrath of God

Destroy all creatures. They can't be regenerated.

Mishra's Factory

{T}: Add {C}.
{1}: This land becomes a 2/2 Assembly-Worker artifact creature until end of turn. It's still a land.
{T}: Target Assembly-Worker creature gets +1/+1 until end of turn.

Land Tax

At the beginning of your upkeep, if an opponent controls more lands than you, you may search your library for up to three basic land cards, reveal them, put them into your hand, then shuffle.

Icatian Javelineers

This creature enters with a javelin counter on it.
{T}, Remove a javelin counter from this creature: It deals 1 damage to any target.