Flying
Nonland permanents you control have phasing.
Whenever Spacetime Seraph phases out, until your next turn, your life total can't change and you have protection from everything.

Flying
Sacrifice Spellbane Sentinel: Counter target noncreature spell unless its controller pays {1}.

Flying
Drop — When Sphinx of the Soundveins enters the battlefield, if you didn't cast any creature spells during your last turn, untap up to three lands.

Flying
Springsoarer enters the battlefield with a +1/+1 counter on it if a creature you controlled dealt combat damage to a player this turn.
Wander {2}{U}

Flying
When Squallrunner Duo enters the battlefield, create a 1/1 white Human creature token.
Tapped nontoken creatures you control have wander {2}.

Flying
Drop — When Staggering Wyvern enters the battlefield, if you didn't cast any creature spells during your last turn, tap up to two target creatures. Those creatures don't untap during their controller's next untap step.

Flying
Whenever an opponent spends mana, if it wasn't spent to cast a spell from their hand, you draw a card. This ability triggers only once each turn.

When Stonework Infuser enters the battlefield, create a 1/1 blue Gargoyle artifact creature token with flying.

Flying
Ward {X}, where X is the number of enchantments you control.
Whenever Stormscraper of Ketaphos deals combat damage to a player or planeswalker, create a token that's a copy of another target enchantment you control.

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
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

{X}: Symbol of the Revolution dares X. X can't be 0.
As long as Symbol of the Revolution is a Rebel, it has flying, lifelink, and vigilance.

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.

Tempting Darkfiend enters the battlefield with a flying counter on it unless an opponent pays 2 life. The same is true for menace, deathtouch, lifelink, and indestructible counters.

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 the battlefield, 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.

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 the battlefield 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 activated, where X is your devotion to red and white. Activate only once each turn.

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