When Stratos Sentry enters, target opponent chooses a nontoken creature they control. You integrate that creature.
As long as a creature card with power 3 or less is integrated onto Stratos Sentry, it gets +1/+0 and has flying.

Flying
When Stratus Fledgling enters, it acclimates.
Weather spells you cast cost {1} less to cast.

Flying
Favored
Whenever your Champion attacks, untap it.

Scry 3.
Create a 1/1 colorless Thopter artifact creature token with flying.

This spell has flash as long as you have at least 3 life more than your starting life total.
Flying

Flash
Flying
When Swooping Hunter enters, create a Berry token, then you may return another creature you control to its owner's hand.

Flying
Whenever Synthetic Specter deals combat damage to a player, that player discards a card. Then if they have no cards in hand, put a +1/+1 counter on Synthetic Specter.

Target creature gains flying until end of turn. Draw a card.

As long as you've cast an instant spell this turn, Teqien Overseer gets +1/+1 and has hexproof.
As long as you've cast a sorcery spell this turn, Teqien Overseer gets +1/+1 and has flying.

Flying, vigilance
When The Army of Trax enters, create a number of 0/0 white Army creature tokens equal to your devotion to white. Then put that many +1/+1 counters on each Army you control.

Draw a card if a creature you control has flying. Do the same for first strike, double strike, deathtouch, haste, hexproof, indestructible, lifelink, menace, reach, trample, and vigilance.

Flying, haste
Instant and sorcery spells cost {2} less to cast.
Whenever an opponent casts their second spell each turn, create a 5/5 red Dragon enchantment creature token with flying.

At the beginning of combat on your turn, Thrill of the Trendchase becomes a copy of a creature on the battlefield chosen at random until end of turn, except it's a 5/5 red Elemental with flying and haste and isn't legendary if the chosen creature is legendary.

Enchant creature
As long as enchanted creature has flying, each creature you control has flying. The same is true for first strike, double strike, deathtouch, haste, hexproof, indestructible, lifelink, menace, reach, trample, and vigilance.

Flying
Ward—{2}, Pay 2 life.
Whenever you cast a noncreature spell, draw a card.

Titan's Stairs enters tapped.
{T}: Add {R} or {W}.
{3}{R/W}: Titan's Stairs becomes a 2/2 red and white Archon creature with flying until end of turn. It's still a land. This ability costs {X} less to activate, where X is your devotion to red and white. Activate only once each turn.

Flying
{1}{VP}{VP}, {T}: Tap target creature.

Draw two cards.
Up to one target creature gains flying until end of turn.

Tree of Clues enters tapped.
{T}: Add {B}, {R}, or {G}.
{VP}{VP}{VP}{VP}, Discard Tree of Clues: Target creature gets +3/+3 and gains flying until end of turn.

Flying
Ward—Discard a card.
You have “Ward—Discard a card.”
At the beginning of your upkeep, your life total becomes equal to your devotion to black.

Once each turn, when you activate a nonmana ability, you may have creatures your opponents control get -1/-0 until end of turn.
{2}: Unnerving Moth gains flying until end of turn.

Untap any number of target creatures. They gain flying and protection from noncreatures until end of turn.

Whenever a creature an opponent controls becomes tapped, if it isn't being declared as an attacker, you may draw a card.
{4}{U}: Tap target creature without flying.

Flying, trample, haste
Vishanki Hellkite enters with a +1/+1 counter on it for each mana from an artifact source spent to cast it.

Flying
At the beginning of your end step, you may exile a card you own from outside the game. Put that card into your hand unless an opponent pays {2} and 2 life.