Monsoon

At the beginning of each player's end step, tap all untapped Islands that player controls and this enchantment deals X damage to the player, where X is the number of Islands tapped this way.

Squall Line

Squall Line deals X damage to each creature with flying and each player.

Cataclysmic Prospecting

Cataclysmic Prospecting deals X damage to each creature. For each mana from a Desert spent to cast this spell, create a tapped Treasure token.

Goblin Flectomancer

Sacrifice this creature: You may change the targets of target instant or sorcery spell.

Sapphire Medallion

Blue spells you cast cost {1} less to cast.

Copper Myr

Goblin Electromancer

Instant and sorcery spells you cast cost {1} less to cast.

Overabundance

Whenever a player taps a land for mana, that player adds one mana of any type that land produced, and this enchantment deals 1 damage to the player.

Lightning Bolt

Lightning Bolt deals 3 damage to any target.

Ruby Medallion

Red spells you cast cost {1} less to cast.

Silver Myr

Temur Ascendancy

Creatures you control have haste.
Whenever a creature you control with power 4 or greater enters, you may draw a card.

Cinder Elemental

{X}{R}, {T}, Sacrifice this creature: It deals X damage to any target.

Fanning the Flames

Buyback {3} (You may pay an additional {3} as you cast this spell. If you do, put this card into your hand as it resolves.)
Fanning the Flames deals X damage to any target.

Iron Myr

Rolling Earthquake

Rolling Earthquake deals X damage to each creature without horsemanship and each player.

Banefire

Banefire deals X damage to any target.
If X is 5 or more, this spell can't be countered and the damage can't be prevented.

Astral Cornucopia

This artifact enters with X charge counters on it.
{T}: Choose a color. Add one mana of that color for each charge counter on this artifact.

Mana Flare

Whenever a player taps a land for mana, that player adds one mana of any type that land produced.

Arcane Denial

Counter target spell. Its controller may draw up to two cards at the beginning of the next turn's upkeep.
You draw a card at the beginning of the next turn's upkeep.

Clan Defiance

Choose one or more —
• Clan Defiance deals X damage to target creature with flying.
• Clan Defiance deals X damage to target creature without flying.
• Clan Defiance deals X damage to target player or planeswalker.

Beast Within

Destroy target permanent. Its controller creates a 3/3 green Beast creature token.

Blaze

Bred for the Hunt

Whenever a creature you control with a +1/+1 counter on it deals combat damage to a player, you may draw a card.

Hurricane

Hurricane deals X damage to each creature with flying and each player.

Fault Line

Fault Line deals X damage to each creature without flying and each player.

Earthquake

Earthquake deals X damage to each creature without flying and each player.

Circle of Dreams Druid

{T}: Add {G} for each creature you control.

Awaken the Woods

Create X 1/1 green Forest Dryad land creature tokens. (They're affected by summoning sickness.)

Command Tower

{T}: Add one mana of any color in your commander's color identity.

Horizon Stone

If you would lose unspent mana, that mana becomes colorless instead.

Spell Pierce

Counter target noncreature spell unless its controller pays {2}.

Worldsoul's Rage

Worldsoul's Rage deals X damage to any target. Put up to X land cards from your hand and/or graveyard onto the battlefield tapped.

Lotus Cobra

Landfall — Whenever a land you control enters, add one mana of any color.

Borrowing the East Wind

Borrowing the East Wind deals X damage to each creature with horsemanship and each player.

Mindswipe

Counter target spell unless its controller pays {X}. Mindswipe deals X damage to that spell's controller.

Zoanthrope

Ravenous (This creature enters with X +1/+1 counters on it. If X is 5 or more, draw a card when it enters.)
Flying, ward {2}
Warp Blast — When this creature enters, it deals X damage to any target.

Birds of Paradise

Comet Storm

Multikicker {1} (You may pay an additional {1} any number of times as you cast this spell.)
Choose any target, then choose another target for each time this spell was kicked. Comet Storm deals X damage to each of them.

Song of the Dryads

Enchant permanent
Enchanted permanent is a colorless Forest land.

Helm of Awakening

Magus of the Vineyard

At the beginning of each player's first main phase, that player adds {G}{G}.

Sol Ring

Arcane Signet

Hull Breach

Choose one —
• Destroy target artifact.
• Destroy target enchantment.
• Destroy target artifact and target enchantment.

Dismissive Pyromancer

{R}, {T}, Discard a card: Draw a card.
{2}{R}, {T}, Sacrifice this creature: It deals 4 damage to target creature.

Magus Lucea Kane

Spiritual Leader — At the beginning of combat on your turn, put a +1/+1 counter on target creature.
Psychic Stimulus — {T}: Add {C}{C}. When you next cast a spell with {X} in its mana cost or activate an ability with {X} in its activation cost this turn, copy that spell or ability. You may choose new targets for the copy. (A copy of a permanent spell becomes a token.)

Ghitu Fire

You may cast this spell as though it had flash if you pay {2} more to cast it. (You may cast it any time you could cast an instant.)
Ghitu Fire deals X damage to any target.

Emerald Medallion

Green spells you cast cost {1} less to cast.

Lava Burst

Lava Burst deals X damage to any target. If Lava Burst would deal damage to a creature, that damage can't be prevented or dealt instead to another permanent or player.

Zhur-Taa Ancient

Goblin Anarchomancer

Each spell you cast that's red or green costs {1} less to cast.

Delete

Delete deals X damage to each nonartifact creature and each player.

Pollywog Prodigy

Evolve (Whenever a creature you control enters, if that creature has greater power or toughness than this creature, put a +1/+1 counter on this creature.)
Whenever an opponent casts a noncreature spell with mana value less than this creature's power, draw a card.

Micromancer

When this creature enters, you may search your library for an instant or sorcery card with mana value 1, reveal it, put it into your hand, then shuffle.

Pongify

Destroy target creature. It can't be regenerated. Its controller creates a 3/3 green Ape creature token.

Zhur-Taa Druid

{T}: Add {G}.
Whenever you tap this creature for mana, it deals 1 damage to each opponent.