Flash

Flying, vigilance

When Archangel Avacyn enters the battlefield, creatures you control gain indestructible until end of turn.

When a non-Angel creature you control dies, transform Archangel Avacyn at the beginning of the next upkeep.

Flying

When this creature transforms into Avacyn, the Purifier, it deals 3 damage to each other creature and each opponent.

Legendary creatures don't untap during their controllers' untap steps.

When Arena of the Ancients enters the battlefield, tap all legendary creatures.

Flying

Other Bird creatures get +1/+1.

Other Soldier creatures get +1/+1.

Flash

Flying

If an opponent would search a library, that player searches the top four cards of that library instead.

Amplify 1 (As this creature enters the battlefield, put a +1/+1 counter on it for each Bird and/or Soldier card you reveal in your hand.)

Flying

Create two 1/1 white Bird creature tokens with flying.

Flashback--Tap three untapped white creatures you control. (You may cast this card from your graveyard for its flashback cost. Then exile it.)

{1}, {T}: Put a charge counter on Brain in a Jar, then you may cast an instant or sorcery spell with mana value equal to the number of charge counters on Brain in a Jar from your hand without paying its mana cost.

{3}, {T}, Remove X charge counters from Brain in a Jar: Scry X.

Flying

When Celestial Gatekeeper dies, exile it, then return up to two target Bird and/or Cleric permanent cards from your graveyard to the battlefield.

Flying, protection from creatures

Corrupted Grafstone enters the battlefield tapped.

{T}: Choose a color of a card in your graveyard. Add one mana of that color.

Flying, vigilance

Exile all creatures.

Delirium -- Create a 4/4 white Angel creature token with flying if there are four or more card types among cards in your graveyard.

Flying, protection from black

Flying

When Eddytrail Hawk enters the battlefield, you get {E}{E} (two energy counters).

Whenever Eddytrail Hawk attacks, you may pay {E}. If you do, another target attacking creature gains flying until end of turn.

Exile any number of target creatures you control. Return those cards to the battlefield under their owner's control at the beginning of the next end step.

Destroy target artifact or enchantment with mana value 4 or less.

Flying, protection from red

Flying

Creatures can't attack you unless their controller pays {2} for each creature they control that's attacking you.

{T}: Add three mana of any one color.

Flying

When Glint Hawk enters the battlefield, sacrifice it unless you return an artifact you control to its owner's hand.

Flying

High Sentinels of Arashin gets +1/+1 for each other creature you control with a +1/+1 counter on it.

{3}{W}: Put a +1/+1 counter on target creature.

Your life total becomes equal to your starting life total. Lands you control don't untap during your next untap step.

White spells you cast cost {1} less to cast.

({T}: Add {W}.)

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Return all basic land cards from all graveyards to the battlefield tapped under their owners' control.

Defender (This creature can't attack.)

When Roc Egg dies, create a 3/3 white Bird creature token with flying.

Flash

Enchant creature you control

When Saving Grace enters the battlefield, all damage that would be dealt this turn to you and permanents you control is dealt to enchanted creature instead.

Enchanted creature gets +0/+3.

Flying

Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)

Flying, vigilance

{T}: Add {C}{C}.

Bird creatures get +1/+1.

{1}{W}: Target Bird creature gains banding until end of turn. (Any creatures with banding, and up to one without, can attack in a band. Bands are blocked as a group. If any creatures with banding a player controls are blocking or being blocked by a creature, that player divides that creature's combat damage, not its controller, among any of the creatures it's being blocked by or is blocking.)

Whenever a Bird is put into your graveyard from the battlefield, put a feather counter on Soulcatchers' Aerie.

Bird creatures get +1/+1 for each feather counter on Soulcatchers' Aerie.

{T}: Add {C}{C}{C}.

As Unclaimed Territory enters the battlefield, choose a creature type.

{T}: Add {C}.

{T}: Add one mana of any color. Spend this mana only to cast a creature spell of the chosen type.

As Urza's Incubator enters the battlefield, choose a creature type.

Creature spells of the chosen type cost {2} less to cast.

Flying

Attacking creatures you control have lifelink.

Flying

Melee (Whenever this creature attacks, it gets +1/+1 until end of turn for each opponent you attacked this combat.)