Muse Drake

Flying
When Muse Drake enters, draw a card.

Shimmerscale Drake

Flying
Cycling {2} ({2}, Discard this card: Draw a card.)

Spire Owl

Flying
When Spire Owl enters, look at the top four cards of your library, then put them back in any order.

Seacoast Drake

Thunder Drake

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

Rhystic Study

Whenever an opponent casts a spell, you may draw a card unless that player pays {1}.

Messenger Drake

Flying
When Messenger Drake dies, draw a card.

Wind Drake

Snapping Drake

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

Sage Owl

Flying
When Sage Owl enters, look at the top four cards of your library, then put them back in any order.

Stitched Drake

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

Chasm Drake

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

Spindrift Drake

Flying
At the beginning of your upkeep, sacrifice Spindrift Drake unless you pay {U}.

Peregrine Drake

Flying
When Peregrine Drake enters, untap up to five lands.

Spire Monitor

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

Dukhara Peafowl

{U}: Dukhara Peafowl gains flying until end of turn.

Aerial Guide

Flying
Whenever Aerial Guide attacks, another target attacking creature gains flying until end of turn.

Academy Drake

Kicker {4} (You may pay an additional {4} as you cast this spell.)
Flying
If Academy Drake was kicked, it enters with two +1/+1 counters on it.

Augury Owl

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

Ringwarden Owl

Flying (This creature can't be blocked except by creatures with flying or reach.)
Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)

Saheeli's Silverwing

Flying
When Saheeli's Silverwing enters, look at the top card of target opponent's library.

Owl Familiar

Flying
When Owl Familiar enters, draw a card, then discard a card.

Wormfang Drake

Flying
When Wormfang Drake enters, sacrifice it unless you exile a creature you control other than Wormfang Drake.
When Wormfang Drake leaves the battlefield, return the exiled card to the battlefield under its owner's control.