Healer's Hawk

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

Plains

Thriving Heath enters tapped. As it enters, choose a color other than white.
{T}: Add {W} or one mana of the chosen color.

Destroy target tapped creature. You gain 1 life for each creature you control with flying.

Whenever Falconer Adept attacks, create a 1/1 white Bird creature token with flying that's tapped and attacking.

Flying
Whenever Archon of Redemption or another creature you control with flying enters, you may gain life equal to that creature's power.

Defender (This creature can't attack.)
Attacking creatures you control get +1/+0.

Flying
When Archon of Justice dies, exile target permanent.

{1}{W}, {T}: Tap target creature. Activate only if you control a creature with flying.

Flying
When Gale Swooper enters, target creature gains flying until end of turn.

Target creature gets +1/+7 until end of turn.

Up to two target creatures each get +2/+2 until end of turn.

Enchant creature
Enchanted creature has defender and loses flying.