Keyword: Flying

Flying
When Sawtooth Loon enters, return a white or blue creature you control to its owner’s hand.
When Sawtooth Loon enters, draw two cards, then put two cards from your hand on the bottom of your library.

Flying
When Cavern Harpy enters, return a blue or black creature you control to its owner’s hand.
Pay 1 life: Return Cavern Harpy to its owner’s hand.

Flying
When Doomsday Specter enters, return a blue or black creature you control to its owner’s hand.
Whenever Doomsday Specter deals combat damage to a player, look at that player’s hand and choose a card from it. The player discards that card.

Flying
: Volcano Imp gains first strike until end of turn.

Kicker (You may pay an additional as you cast this spell.)
Flying
When Tolarian Emissary enters, if it was kicked, destroy target enchantment.

Flying
Whenever Crosis, the Purger deals combat damage to a player, you may pay . If you do, choose a color, then that player reveals their hand and discards all cards of that color.

Flying
: Tower Drake gets +0/+1 until end of turn.

Flying
Whenever Darigaaz, the Igniter deals combat damage to a player, you may pay . If you do, choose a color, then that player reveals their hand and Darigaaz deals damage to the player equal to the number of cards of that color revealed this way.

Flying
At the beginning of your upkeep, you may return target creature card from your graveyard to the battlefield.

Flying
Whenever Phyrexian Slayer becomes blocked by a white creature, destroy that creature. It can’t be regenerated.

Flying
Blue spells you cast cost more to cast.

Flying
: Rainbow Crow becomes the color of your choice until end of turn.

Flying, haste
Whenever Blazing Specter deals combat damage to a player, that player discards a card.

Flying
: You may put a creature card with mana value X from your hand onto the battlefield. If you do, return Metathran Aerostat to its owner’s hand.

Flying
: Glimmering Angel gains shroud until end of turn. (It can’t be the target of spells or abilities.)

Flying
Urborg Drake attacks each combat if able.

Flying
Whenever Rith, the Awakener deals combat damage to a player, you may pay . If you do, choose a color, then create a 1/1 green Saproling creature token for each permanent of that color.

Flying
When Angel of Mercy enters, you gain 3 life.

Flying
Whenever Treva, the Renewer deals combat damage to a player, you may pay . If you do, choose a color, then you gain 1 life for each permanent of that color.

Flying
Metathran Transport can’t be blocked by blue creatures.
: Target creature becomes blue until end of turn.

Flying
Whenever Dromar, the Banisher deals combat damage to a player, you may pay . If you do, choose a color, then return all creatures of that color to their owners’ hands.

Flying
Zanam Djinn gets -2/-2 as long as blue is the most common color among all permanents or is tied for most common.

Flying
: Target land becomes the basic land type of your choice until end of turn.

Flying (This creature can’t be blocked except by creatures with flying or reach.)
First strike (This creature deals combat damage before creatures without first strike.)