Welkin Tern

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

Phantom Ninja

Merrow Levitator

{T}: Target creature gains flying until end of turn.
Whenever you cast a blue spell, you may untap Merrow Levitator.

Chasm Drake

Flying
Whenever Chasm Drake attacks, target creature you control gains flying until end of turn.

Leapfrog

Leapfrog has flying as long as you've cast an instant or sorcery spell this turn.

Corridor Monitor

When Corridor Monitor enters, untap target artifact or creature you control.

Glimmerbell

Cleric of Chill Depths

Whenever Cleric of Chill Depths blocks a creature, that creature doesn't untap during its controller's next untap step.

Steelgaze Griffin

Flying
Whenever you draw your second card each turn, Steelgaze Griffin gets +2/+0 until end of turn.

Island

Draugr Thought-Thief

When Draugr Thought-Thief enters, look at the top card of target player's library. You may put that card into their graveyard.

Bronze Sword

Equipped creature gets +2/+0.
Equip {3} ({3}: Attach to target creature you control. Equip only as a sorcery.)

Long-Finned Skywhale

Flying
Long-Finned Skywhale can block only creatures with flying.

Frilled Sea Serpent

{5}{U}{U}: Frilled Sea Serpent can't be blocked this turn.

Kitesail Corsair

This creature has flying as long as it's attacking.

Wishcoin Crab

Academy Journeymage

This spell costs {1} less to cast if you control a Wizard.
When Academy Journeymage enters, return target creature an opponent controls to its owner's hand.

Soothsayer Adept

{1}{U}, {T}: Draw a card, then discard a card.

Pondering Mage

When Pondering Mage enters, look at the top three cards of your library, then put them back in any order. You may shuffle. Draw a card.

Slither Blade

Tide Skimmer

Flying
Whenever you attack with two or more creatures with flying, draw a card.

Talrand's Invocation

Create two 2/2 blue Drake creature tokens with flying.

Ghostform

Up to two target creatures can't be blocked this turn.

Triton Shorestalker

Kraken Hatchling

Thieving Otter

Whenever Thieving Otter deals damage to an opponent, draw a card.

Kelpie Guide

{T}: Untap another target permanent you control.
{T}: Tap target permanent. Activate only if you control eight or more lands.

Selhoff Entomber

{T}, Discard a creature card: Draw a card.

Waker of Waves

Creatures your opponents control get -1/-0.
{1}{U}, Discard Waker of Waves: Look at the top two cards of your library. Put one of them into your hand and the other into your graveyard.

Negate

Soulknife Spy

Whenever Soulknife Spy deals combat damage to a player, draw a card.

Divination

Clever Conjurer

Mage Hand — {T}: Untap target permanent not named Clever Conjurer. Activate only as a sorcery.