Acid Rain

Conversion

At the beginning of your upkeep, sacrifice this enchantment unless you pay {W}{W}.
All Mountains are Plains.

Yavimaya, Cradle of Growth

Each land is a Forest in addition to its other land types.

Perish

Destroy all green creatures. They can't be regenerated.

Guttural Response

Ramos, Dragon Engine

Flying
Whenever you cast a spell, put a +1/+1 counter on Ramos for each of that spell's colors.
Remove five +1/+1 counters from Ramos: Add {W}{W}{U}{U}{B}{B}{R}{R}{G}{G}. Activate only once each turn.

Aphotic Wisps

Target creature becomes black and gains fear until end of turn. (It can't be blocked except by artifact creatures and/or black creatures.)
Draw a card.

Virtue's Ruin

Stromgald Cabal

{T}, Pay 1 life: Counter target white spell.

Deathgrip

Curse of Marit Lage

When this enchantment enters, tap all Islands.
Islands don't untap during their controllers' untap steps.

Jawbone Skulkin

{2}: Target red creature gains haste until end of turn.

Viridescent Wisps

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

Red Elemental Blast

Choose one —
• Counter target blue spell.
• Destroy target blue permanent.

Magus of the Moon

Lifeforce

Hoof Skulkin

{3}: Target green creature gets +1/+1 until end of turn.

Dark Betrayal

Active Volcano

Choose one —
• Destroy target blue permanent.
• Return target Island to its owner's hand.

Singe

Singe deals 1 damage to target creature. That creature becomes black until end of turn.

Call to the Netherworld

Return target black creature card from your graveyard to your hand.
Madness {0} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)

Wallop

Destroy target blue or black creature with flying.

Daraja Griffin

Flying
Sacrifice this creature: Destroy target black creature.

Glaciers

At the beginning of your upkeep, sacrifice this enchantment unless you pay {W}{U}.
All Mountains are Plains.

Niveous Wisps

Target creature becomes white until end of turn. Tap that creature.
Draw a card.

Dwarven Song

One or more target creatures become red until end of turn.

Glare of Heresy

Blue Elemental Blast

Choose one —
• Counter target red spell.
• Destroy target red permanent.

Shell Skulkin

{3}: Target blue creature gains shroud until end of turn. (It can't be the target of spells or abilities.)

Boil

Thoughtlace

Target spell or permanent becomes blue. (Mana symbols on that permanent remain unchanged.)

Orcish Healer

{R}{R}, {T}: Target creature can't be regenerated this turn.
{B}{B}{R}, {T}: Regenerate target black or green creature.
{R}{G}{G}, {T}: Regenerate target black or green creature.

Thrull Wizard

{1}{B}: Counter target black spell unless that spell's controller pays {B} or {3}.

Nightcreep

Until end of turn, all creatures become black and all lands become Swamps.

Deathmark

Tsunami

Douse

Anarchy

Execute

Destroy target white creature. It can't be regenerated.
Draw a card.

Boiling Seas

Reign of Chaos

Choose one —
• Destroy target Plains and target white creature.
• Destroy target Island and target blue creature.

Nature's Ruin

Aurora Griffin

Flying
{W}: Target permanent becomes white until end of turn.

Urborg, Tomb of Yawgmoth

Each land is a Swamp in addition to its other land types.

Exorcist

{1}{W}, {T}: Destroy target black creature.

Crimson Wisps

Target creature becomes red and gains haste until end of turn. (It can attack and {T} this turn.)
Draw a card.

Flashfreeze

Display of Dominance

Choose one —
• Destroy target blue or black noncreature permanent.
• Permanents you control can't be the targets of blue or black spells your opponents control this turn.

Rending Volley

This spell can't be countered.
Rending Volley deals 4 damage to target white or blue creature.

Fang Skulkin

{2}: Target black creature gains wither until end of turn. (It deals damage to creatures in the form of -1/-1 counters.)

Gainsay

Touch of Darkness

One or more target creatures become black until end of turn.

Slay

Destroy target green creature. It can't be regenerated.
Draw a card.

Devout Lightcaster

Protection from black
When this creature enters, exile target black permanent.

Flashfires

Harbinger of the Seas

Flash Flood

Choose one —
• Destroy target red permanent.
• Return target Mountain to its owner's hand.

Stench of Evil

Destroy all Plains. For each land destroyed this way, Stench of Evil deals 1 damage to that land's controller unless they pay {2}.

Antler Skulkin

{2}: Target white creature gains persist until end of turn. (When it dies, if it had no -1/-1 counters on it, return it to the battlefield under its owner's control with a -1/-1 counter on it.)

Lifelace

Target spell or permanent becomes green. (Mana symbols on that permanent remain unchanged.)

Celestial Purge

Heaven's Gate

One or more target creatures become white until end of turn.

Parch

Choose one —
• Parch deals 2 damage to any target.
• Parch deals 4 damage to target blue creature.

Blood Moon

Cerulean Wisps

Target creature becomes blue until end of turn. Untap that creature.
Draw a card.

Surge of Righteousness

Destroy target black or red creature that's attacking or blocking. You gain 2 life.

Incite

Target creature becomes red until end of turn and attacks this turn if able.

Order of the Sacred Torch

{T}, Pay 1 life: Counter target black spell.

Sea Kings' Blessing

One or more target creatures become blue until end of turn.

Sleight of Mind

Change the text of target spell or permanent by replacing all instances of one color word with another. (For example, you may change "target black spell" to "target blue spell." This effect lasts indefinitely.)

Sylvan Paradise

One or more target creatures become green until end of turn.

Combust

This spell can't be countered.
Combust deals 5 damage to target white or blue creature. The damage can't be prevented.