
Dauntless River Marshal | Creature | Human Soldier | Dauntless River Marshal gets +1/+1 as long as you control an Island.
{3}{U}: Tap target creature. | Mark Winters

Aeronaut Tinkerer | Creature | Human Artificer | Aeronaut Tinkerer has flying as long as you control an artifact. (It can't be blocked except by creatures with flying or reach.) | Willian Murai

Aetherspouts | Instant | | For each attacking creature, its owner puts it on the top or bottom of their library. | Dan Scott

Amphin Pathmage | Creature | Salamander Wizard | {2}{U}: Target creature can't be blocked this turn. | Mark Winters

Chasm Skulker | Creature | Squid Horror | Whenever you draw a card, put a +1/+1 counter on Chasm Skulker.
When Chasm Skulker dies, create X 1/1 blue Squid creature tokens with islandwalk, where X is the number of +1/+1 counters on Chasm Skulker. (They can't be blocked as long as defending player controls an Island.) | Jack Wang

Chief Engineer | Creature | Vedalken Artificer | Artifact spells you cast have convoke. (Your creatures can help cast those spells. Each creature you tap while casting an artifact spell pays for {1} or one mana of that creature's color.) | Steven Belledin

Chronostutter | Instant | | Put target creature into its owner's library second from the top. | Seb McKinnon

Coral Barrier | Creature | Wall | Defender (This creature can't attack.)
When Coral Barrier enters the battlefield, create a 1/1 blue Squid creature token with islandwalk. (It can't be blocked as long as defending player controls an Island.) | Florian de Gesincourt

Diffusion Sliver | Creature | Sliver | Whenever a Sliver creature you control becomes the target of a spell or ability an opponent controls, counter that spell or ability unless its controller pays {2}. | Trevor Claxton

Dissipate | Instant | | Counter target spell. If that spell is countered this way, exile it instead of putting it into its owner's graveyard. | Tomasz Jedruszek

Divination | Sorcery | | Draw two cards. | Howard Lyon

Encrust | Enchantment | Aura | Enchant artifact or creature
Enchanted permanent doesn't untap during its controller's untap step and its activated abilities can't be activated. | Jason Felix

Ensoul Artifact | Enchantment | Aura | Enchant artifact
Enchanted artifact is a creature with base power and toughness 5/5 in addition to its other types. | Jasper Sandner

Frost Lynx | Creature | Elemental Cat | When Frost Lynx enters the battlefield, tap target creature an opponent controls. That creature doesn't untap during its controller's next untap step. | Izzy

Fugitive Wizard | Creature | Human Wizard | | Mark Zug

Glacial Crasher | Creature | Elemental | Trample (This creature can deal excess combat damage to the player or planeswalker it's attacking.)
Glacial Crasher can't attack unless there is a Mountain on the battlefield. | Mark Winters

Hydrosurge | Instant | | Target creature gets -5/-0 until end of turn. | Steve Prescott

Illusory Angel | Creature | Angel Illusion | Cast this spell only if you've cast another spell this turn.
Flying | Allen Williams

Into the Void | Sorcery | | Return up to two target creatures to their owners' hands. | Daarken

Invisibility | Enchantment | Aura | Enchant creature
Enchanted creature can't be blocked except by Walls. | Pete Venters

Jace, the Living Guildpact | Legendary Planeswalker | Jace | +1: Look at the top two cards of your library. Put one of them into your graveyard.
−3: Return another target nonland permanent to its owner's hand.
−8: Each player shuffles their hand and graveyard into their library. You draw seven cards. | Chase Stone

Jace's Ingenuity | Instant | | Draw three cards. | Igor Kieryluk

Jalira, Master Polymorphist | Legendary Creature | Human Wizard | {2}{U}, {T}, Sacrifice another creature: Reveal cards from the top of your library until you reveal a nonlegendary creature card. Put that card onto the battlefield and the rest on the bottom of your library in a random order. | Steve Prescott

Jorubai Murk Lurker | Creature | Leech | Jorubai Murk Lurker gets +1/+1 as long as you control a Swamp.
{1}{B}: Target creature gains lifelink until end of turn. (Damage dealt by the creature also causes its controller to gain that much life.) | Clint Cearley

Kapsho Kitefins | Creature | Fish | Flying
Whenever Kapsho Kitefins or another creature enters the battlefield under your control, tap target creature an opponent controls. | Ryan Yee

Master of Predicaments | Creature | Sphinx | Flying
Whenever Master of Predicaments deals combat damage to a player, choose a card in your hand. That player guesses whether the card's mana value is greater than 4. If the player guessed wrong, you may cast the card without paying its mana cost. | Matt Stewart

Mercurial Pretender | Creature | Shapeshifter | You may have Mercurial Pretender enter the battlefield as a copy of a creature you control, except it has "{2}{U}{U}: Return this creature to its owner's hand." | Izzy

Military Intelligence | Enchantment | | Whenever you attack with two or more creatures, draw a card. | Craig J Spearing

Mind Sculpt | Sorcery | | Target opponent mills seven cards. | Michael C. Hayes

Negate | Instant | | Counter target noncreature spell. | Jeremy Jarvis

Nimbus of the Isles | Creature | Elemental | Flying (This creature can't be blocked except by creatures with flying or reach.) | Cliff Childs

Paragon of Gathering Mists | Creature | Human Wizard | Other blue creatures you control get +1/+1.
{U}, {T}: Another target blue creature you control gains flying until end of turn. | Michael C. Hayes

Peel from Reality | Instant | | Return target creature you control and target creature you don't control to their owners' hands. | Jason Felix

Polymorphist's Jest | Instant | | Until end of turn, each creature target player controls loses all abilities and becomes a blue Frog with base power and toughness 1/1. | Craig J Spearing

Quickling | Creature | Faerie Rogue | Flash (You may cast this spell any time you could cast an instant.)
Flying
When Quickling enters the battlefield, sacrifice it unless you return another creature you control to its owner's hand. | Clint Cearley

Research Assistant | Creature | Human Wizard | {3}{U}, {T}: Draw a card, then discard a card. | Svetlin Velinov

Soul of Ravnica | Creature | Avatar | Flying
{5}{U}{U}: Draw a card for each color among permanents you control.
{5}{U}{U}, Exile Soul of Ravnica from your graveyard: Draw a card for each color among permanents you control. | Stephan Martiniere

Statute of Denial | Instant | | Counter target spell. If you control a blue creature, draw a card, then discard a card. | Zoltan Boros

Stormtide Leviathan | Creature | Leviathan | Islandwalk (This creature can't be blocked as long as defending player controls an Island.)
All lands are Islands in addition to their other types.
Creatures without flying or islandwalk can't attack. | Karl Kopinski

Turn to Frog | Instant | | Until end of turn, target creature loses all abilities and becomes a blue Frog with base power and toughness 1/1. | Warren Mahy

Void Snare | Sorcery | | Return target nonland permanent to its owner's hand. | Zack Stella

Wall of Frost | Creature | Wall | Defender
Whenever Wall of Frost blocks a creature, that creature doesn't untap during its controller's next untap step. | Mike Bierek

Welkin Tern | Creature | Bird | Flying (This creature can't be blocked except by creatures with flying or reach.)
Welkin Tern can block only creatures with flying. | Austin Hsu

Sliver Hivelord | Legendary Creature | Sliver | Sliver creatures you control have indestructible. (Damage and effects that say "destroy" don't destroy them.) | Aleksi Briclot

Shivan Reef | Land | | {T}: Add {C}.
{T}: Add {U} or {R}. Shivan Reef deals 1 damage to you. | Rob Alexander

Yavimaya Coast | Land | | {T}: Add {C}.
{T}: Add {G} or {U}. Yavimaya Coast deals 1 damage to you. | Anthony S. Waters

Island | Basic Land | Island | ({T}: Add {U}.) | Cliff Childs

Island | Basic Land | Island | ({T}: Add {U}.) | Florian de Gesincourt

Island | Basic Land | Island | ({T}: Add {U}.) | Peter Mohrbacher

Island | Basic Land | Island | ({T}: Add {U}.) | Andreas Rocha