Modern Horizons 3

Meltdown

Meltdown {X}{R}

Sorcery
Destroy each artifact with mana value X or less.
Catastrophes happened so often at the mana rig that the viashino language had a special word to describe them.
Party Thrasher

Party Thrasher {1}{R}

Creature - Lizard Wizard
Noncreature spells you cast from exile have convoke.
At the beginning of your first main phase, you may discard a card. If you do, exile the top two cards of your library, then choose one of them. You may play that card this turn.
1/4
Skoa, Embermage

Skoa, Embermage {4}{R}{R}

Legendary Creature - Goblin Wizard
When Skoa enters, it deals 4 damage to any target.
Grandeur — Discard another card named Skoa, Embermage, Sacrifice two Mountains: Skoa deals 4 damage to any target.
"I need kindling. You'll do nicely."
4/4
Related card: Sacrifice
Unstable Amulet

Unstable Amulet {1}{R}

Artifact
When this artifact enters, you get {E}{E}.
Whenever you cast a spell from anywhere other than your hand, this artifact deals 1 damage to each opponent.
{T}, Pay {E}{E}: Exile the top card of your library. You may play it until you exile another card with this artifact.
Wheel of Potential

Wheel of Potential {2}{R}

Sorcery
You get {E}{E}{E}, then you may pay any amount of {E}.
Each player may exile their hand and draw a number of cards equal to the amount of {E} paid this way. If seven or more {E} was paid this way, you may play cards you own exiled this way until the end of your next turn.
The wheel only has one sure output: chaos.
Eladamri, Korvecdal

Eladamri, Korvecdal {1}{G}{G}

Legendary Creature - Elf Warrior
You may look at the top card of your library any time.
You may cast creature spells from the top of your library.
{G}, {T}, Tap two untapped creatures you control: Reveal a card from your hand or the top card of your library. If you reveal a creature card this way, put it onto the battlefield. Activate only during your turn.
3/3
Evolution Witness

Evolution Witness {2}{G}

Creature - Elf Shaman Mutant
{1}{G}: Adapt 2.
Whenever one or more +1/+1 counters are put on this creature, return target permanent card from your graveyard to your hand.
She remembers every breakthrough, from the gene's mutation to the new life's propagation.
2/1
Flare of Cultivation

Flare of Cultivation {1}{G}{G}

Sorcery
You may sacrifice a nontoken green creature rather than pay this spell's mana cost.
Search your library for up to two basic land cards, reveal those cards, put one onto the battlefield tapped and the other into your hand, then shuffle.
"You need to expand your horizons."
Lion Umbra

Lion Umbra {G}{G}

Enchantment - Aura
Enchant modified creature
Enchanted creature gets +3/+3 and has vigilance and reach.
Umbra armor
Monstrous Vortex

Monstrous Vortex {3}{G}

Enchantment
Whenever you cast a creature spell with power 5 or greater, discover X, where X is that spell's mana value.
Priest of Titania

Priest of Titania {1}{G}

Creature - Elf Druid
{T}: Add {G} for each Elf on the battlefield.
Titania rewards all who honor the forest by making them a living part of it.
1/1
Primal Prayers

Primal Prayers {2}{G}{G}

Enchantment
When this enchantment enters, you get {E}{E}.
You may cast creature spells with mana value 3 or less by paying {E} rather than paying their mana costs. If you cast a spell this way, you may cast it as though it had flash.
When Gaea speaks, all of nature falls silent.
Six

Six {2}{G}

Legendary Creature - Treefolk
Reach
Whenever Six attacks, mill three cards. You may put a land card from among them into your hand.
During your turn, nonland permanent cards in your graveyard have retrace.
2/4
Imskir Iron-Eater

Imskir Iron-Eater {6}{B}{R}

Legendary Creature - Demon
Affinity for artifacts
When Imskir enters, you draw X cards and you lose X life, where X is half the number of artifacts you control, rounded down.
{3}{R}, Sacrifice an artifact: Imskir deals damage equal to the sacrificed artifact's mana value to any target.
5/5
Kudo, King Among Bears

Kudo, King Among Bears {G}{W}

Legendary Creature - Bear
Other creatures have base power and toughness 2/2 and are Bears in addition to their other types.
Born from the greatest granite boulder, nursed on the sweetest honey, crowned amid a raging blizzard.
2/2
Psychic Frog

Psychic Frog {U}{B}

Creature - Frog
Whenever this creature deals combat damage to a player or planeswalker, draw a card.
Discard a card: Put a +1/+1 counter on this creature.
Exile three cards from your graveyard: This creature gains flying until end of turn.
1/2
Rosheen, Roaring Prophet

Rosheen, Roaring Prophet {2}{R}{G}

Legendary Creature - Giant Shaman
When Rosheen enters, mill six cards. You may put a card with {X} in its mana cost from among them into your hand.
{T}: Reveal any number of cards with {X} in their mana cost in your hand. Add {C}{C} for each card revealed this way. Spend this mana only on costs that contain {X}.
4/4
Bloodstained Mire

Bloodstained Mire

Land
{T}, Pay 1 life, Sacrifice this land: Search your library for a Swamp or Mountain card, put it onto the battlefield, then shuffle.
A graveyard for conquerors and conquered alike.
Flooded Strand

Flooded Strand

Land
{T}, Pay 1 life, Sacrifice this land: Search your library for a Plains or Island card, put it onto the battlefield, then shuffle.
Once a prosperous Vantress town, now swept clean and reclaimed by the waters of the wilds.
Nesting Grounds

Nesting Grounds

Land
{T}: Add {C}.
{1}, {T}: Move a counter from target permanent you control onto another target permanent. Activate only as a sorcery.
Dappled coats become armored hides. Soft jaws become razor tusks. Nestling play becomes the fight for survival.
Related card: Eumidian Lifeseed
Polluted Delta

Polluted Delta

Land
{T}, Pay 1 life, Sacrifice this land: Search your library for an Island or Swamp card, put it onto the battlefield, then shuffle.
A warped gateway that seeps toxins and malevolence into the waters around Towashi.
Snow-Covered Wastes

Snow-Covered Wastes

Basic Snow Land
{T}: Add {C}.
Windswept Heath

Windswept Heath

Land
{T}, Pay 1 life, Sacrifice this land: Search your library for a Forest or Plains card, put it onto the battlefield, then shuffle.
An underground paradise, bright and thriving beneath the surface of Ixalan.
Wooded Foothills

Wooded Foothills

Land
{T}, Pay 1 life, Sacrifice this land: Search your library for a Mountain or Forest card, put it onto the battlefield, then shuffle.
Home and hunting ground for Kaldheim's fearsome trolls.
Ajani, Nacatl Pariah
Ajani, Nacatl Avenger

Ajani, Nacatl Pariah {1}{W}

Legendary Creature - Cat Warrior
When Ajani enters, create a 2/1 white Cat Warrior creature token.
Whenever one or more other Cats you control die, you may exile Ajani, then return him to the battlefield transformed under his owner's control.
1/2
Card has other part: Ajani, Nacatl Avenger