Vivisection

As an additional cost to cast this spell, sacrifice a creature.
Draw three cards.

Quicksilver Fisher

Flying
When Quicksilver Fisher enters, draw a card, then discard a card.

Coral Merfolk

Island

Frost Breath

Tap up to two target creatures. Those creatures don't untap during their controller's next untap step.

Quicksilver Geyser

Return up to two target nonland permanents to their owners' hands.

Inspiration

Nephalia Seakite

Flash (You may cast this spell any time you could cast an instant.)
Flying

Rewind

Counter target spell. Untap up to four lands.

Cyclone Summoner

When Cyclone Summoner enters, if you cast it from your hand, return all permanents to their owners' hands except for Giants, Wizards, and lands.

Grafted Identity

As an additional cost to cast this spell, sacrifice a creature.
Enchant creature
You control enchanted creature.
Enchanted creature gets +1/+1.

Messenger Drake

Flying
When Messenger Drake dies, draw a card.

Stitched Drake

As an additional cost to cast this spell, exile a creature card from your graveyard.
Flying

Mind Flayer

Dominate Monster — When Mind Flayer enters, gain control of target creature for as long as you control Mind Flayer.

Trained Condor

Flying
Whenever Trained Condor attacks, another target creature you control gains flying until end of turn.

Oculus

Field Research

Kicker {2}{U} (You may pay an additional {2}{U} as you cast this spell.)
Draw two cards. If this spell was kicked, draw three cards instead.

Windreader Sphinx

Flying
Whenever a creature with flying attacks, you may draw a card.

Frost Trickster

Flying
When Frost Trickster enters, tap target creature an opponent controls. That creature doesn't untap during its controller's next untap step.

Time Ebb

Put target creature on top of its owner's library.

Skyswimmer Koi

Flying
Whenever an artifact you control enters, you may draw a card. If you do, discard a card.

Atemsis, All-Seeing

Flying
{2}{U}, {T}: Draw two cards, then discard a card.
Whenever Atemsis, All-Seeing deals damage to an opponent, you may reveal your hand. If cards with at least six different mana values are revealed this way, that player loses the game.

Cancel

Inaction Injunction

Detain target creature an opponent controls. (Until your next turn, that creature can't attack or block and its activated abilities can't be activated.)
Draw a card.

Harbor Serpent

Islandwalk (This creature can't be blocked as long as defending player controls an Island.)
Harbor Serpent can't attack unless there are five or more Islands on the battlefield.