Angelic Ascension

Exile target creature or planeswalker. Its controller creates a 4/4 white Angel creature token with flying.

Celestial Enforcer

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

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

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

Flying
When Aven Gagglemaster enters, you gain 2 life for each creature you control with flying.

Flying
Whenever Steel-Plume Marshal attacks, other attacking creatures you control with flying get +2/+2 until end of turn.

Enchant creature
Enchanted creature has defender and loses flying.

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

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

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

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