Dragon Wings

Enchant creature
Enchanted creature has flying.
Cycling {1}{U} ({1}{U}, Discard this card: Draw a card.)
When a creature with mana value 6 or greater enters, you may return Dragon Wings from your graveyard to the battlefield attached to that creature.

Cloak of Feathers

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

Wings of Hope

Enchant creature
Enchanted creature gets +1/+3 and has flying.

Neurok Hoversail

Equipped creature has flying.
Equip {2} ({2}: Attach to target creature you control. Equip only as a sorcery. This card enters unattached and stays on the battlefield if the creature leaves.)

Wind Sail

One or two target creatures gain flying until end of turn.

Tobita, Master of Winds

Student of Elements

When Student of Elements has flying, flip it.

Student of Elements // Tobita, Master of Winds

Aboshan's Desire

Enchant creature
Enchanted creature has flying.
Threshold — Enchanted creature has shroud as long as seven or more cards are in your graveyard. (It can't be the target of spells or abilities.)

Updraft

Target creature gains flying until end of turn.
Draw a card at the beginning of the next turn's upkeep.

Daring Leap

Target creature gets +1/+1 and gains flying and first strike until end of turn.

Wings of Aesthir

Enchant creature
Enchanted creature gets +1/+0 and has flying and first strike.

Phantom Wings

Enchant creature
Enchanted creature has flying.
Sacrifice Phantom Wings: Return enchanted creature to its owner's hand.

Buoyancy

Flash
Enchant creature
Enchanted creature has flying.

Lifted by Clouds

Target creature gains flying until end of turn.
Splice onto Arcane {1}{U} (As you cast an Arcane spell, you may reveal this card from your hand and pay its splice cost. If you do, add this card's effects to that spell.)

Zephid's Embrace

Enchant creature
Enchanted creature gets +2/+2 and has flying and shroud. (It can't be the target of spells or abilities.)