Draco

Domain — This spell costs less to cast for each basic land type among lands you control.
Flying
Domain — At the beginning of your upkeep, sacrifice Draco unless you pay . This cost is reduced by for each basic land type among lands you control.

Errant Ephemeron

Flying
Suspend 4— (Rather than cast this card from your hand, you may pay and exile it with four time counters on it. At the beginning of your upkeep, remove a time counter. When the last is removed, cast it without paying its mana cost. It has haste.)

Jwar Isle Avenger

Surge (You may cast this spell for its surge cost if you or a teammate has cast another spell this turn.)
Flying

Sedraxis Specter

Flying
Whenever Sedraxis Specter deals combat damage to a player, that player discards a card.
Unearth (: Return this card from your graveyard to the battlefield. It gains haste. Exile it at the beginning of the next end step or if it would leave the battlefield. Unearth only as a sorcery.)

Dragon Broodmother

Flying
At the beginning of each upkeep, create a 1/1 red and green Dragon creature token with flying and devour 2. (As the token enters the battlefield, you may sacrifice any number of creatures. It enters the battlefield with twice that many +1/+1 counters on it.)

Skyscanner

Flying
When Skyscanner enters the battlefield, draw a card.

Biting Remark

Scrycast (If you see this card while scrying, you may reveal it and cast it by paying .)
Flying

Lightning Shrieker

Flying, trample, haste
At the beginning of the end step, Lightning Shrieker’s owner shuffles it into their library.

Knight of Cliffhaven

Level up (: Put a level counter on this. Level up only as a sorcery.)
LEVEL 1-3
2/3
Flying
LEVEL 4+
4/4
Flying, vigilance

Carrion Imp

Flying
When Carrion Imp enters the battlefield, you may exile target creature card from a graveyard. If you do, you gain 2 life.

Rakdos Drake

Flying
Unleash (You may have this creature enter the battlefield with a +1/+1 counter on it. It can’t block as long as it has a +1/+1 counter on it.)

Zyym, Mesmeric Lord

Flying, deathtouch
When Zyym, Mesmeric Lord enters the battlefield, target opponent chooses an order for the cards in their hand, then reveals them one by one until you say stop. That player then discards the most recently revealed card.

Sengir Vampire

Flying (This creature can’t be blocked except by creatures with flying or reach.)
Whenever a creature dealt damage by Sengir Vampire this turn dies, put a +1/+1 counter on Sengir Vampire.

Eater of Days

Flying, trample
When Eater of Days enters the battlefield, you skip your next two turns.

Baleful Strix

Flying, deathtouch
When Baleful Strix enters the battlefield, draw a card.

Fallen Angel

Flying
Sacrifice a creature: Fallen Angel gets +2/+1 until end of turn.

Augury Owl

Flying
When Augury Owl enters the battlefield, scry 3. (Look at the top three cards of your library, then put any number of them on the bottom of your library and the rest on top in any order.)

Thunder Drake

Flying
Whenever you cast your second spell each turn, put a +1/+1 counter on Thunder Drake.

Furnace Whelp

Flying (This creature can’t be blocked except by creatures with flying or reach.)
: Furnace Whelp gets +1/+0 until end of turn.

Priority Avenger

Flying
Players can’t cast instant spells unless a spell or ability is on the stack.