As long as you control a Bird, this creature gets +2/+2 and has flying.

As long as you control a Griffin creature, this creature gets +3/+3 and has flying.

Metalcraft — As long as you control three or more artifacts, this creature gets +2/+2 and has flying.

As long as this creature is equipped, it gets +1/+1 and has flying.

Vigilance

Threshold — As long as there are seven or more cards in your graveyard, this creature gets +1/+1 and has flying.

Lifelink (Damage dealt by this creature also causes you to gain that much life.)

This creature gets +1/+1 as long as you control an Ajani planeswalker.

Baneslayer Aspirant gets +3/+3 and has flying, first strike, and lifelink as long as you have one or more emblems.

Ascend (If you control ten or more permanents, you get the city's blessing for the rest of the game.)

This creature has flying as long as you have the city's blessing.

Ascend (If you control ten or more permanents, you get the city's blessing for the rest of the game.)

This creature gets +3/+0 as long as you have the city's blessing.

Metalcraft — This creature gets +2/+2 as long as you control three or more artifacts.

Threshold — This creature has flying as long as there are seven or more cards in your graveyard.

Lifelink (Damage dealt by this creature also causes you to gain that much life.)

: This creature gets +3/+3 until end of turn.

This creature has flying as long as it has a +1/+1 counter on it.

As long as this creature is equipped, it gets +1/+1 and has first strike.

This creature gets +1/+2 as long as you control a Forest.

This creature gets +1/+1 as long as you control an Island.

: Tap target creature.

When this creature enters, you gain 1 life.

Soulbond (You may pair this creature with another unpaired creature when either enters. They remain paired for as long as you control both of them.)

As long as this creature is paired with another creature, both creatures have lifelink.