"My dream is to fly" - azorius flying budget (with description) (Modern)

My dream is to fly over the rainbow, so high.
Use flying creatures to avoid opponent's creatures and kill him quickly. All cards are related with flying mechanics. You have control with conclave tribunal, lofty denial and hanged executioner and you have an excelent aggro threat with rally of wings. Sephara, sky's blade is just an awesome card.

COMBOS:

• Sephara, sky's blade & rally of wings : first you tap four creatures and pay one white mana to cast sephara. Then you play rally of wings to untap the creatures and attack with creatures with indestructible.
• conclave tribunal or venerated loxodon & rally of wings : use convoke to cast the spell and then untap the creatures with rally of wings.

TIPS

• Siren stormtamer has an excelent ability to protect sephara and skycat sovereign. You dont need to tap the creature or wait to summoning sickness disappear. Use it wisely.
• Spectral sailor has flash and an ability to draw cards. Important in mid and late game.
• Skycat sovereign can create creatures with flying.
• You can attack and then before the damage would deal you can play rally of wings to untap the creatures which you attacked. It's like buffing your creatures and giving them a kind of vigilance.

IMPROVEMENTS

• You can change tranquil cove for hallowed fountain.

SIDEBOARD

• lofty denial, jubilant skybonder and winged words: against control decks
• Sky tether : against aggro and strong creatures with flying
• disenchant and conclave tribunal: against artifacts and enchantments like gravity well

If any suggestion, I'm all ears