Flying, vigilance

When this enchantment enters, you may search your library and/or graveyard for a card named Gideon, Martial Paragon, reveal it, and put it into your hand. If you search your library this way, shuffle.
Creatures you control get +1/+1.

Flash
Flying
Psychic Defense — When this creature enters, tap all creatures you don't control.

Creatures you control get +1/+2 until end of turn. Untap those creatures.
Basic landcycling

Each player chooses from the lands they control a land of each basic land type, then sacrifices the rest.

Backup 1
Flying

Vigilance
When this creature enters, you take the initiative.

Reach
The Allagan Eye — Whenever one or more other creatures and/or artifacts you control die, draw a card. This ability triggers only once each turn.

When this creature enters, create a tapped Powerstone token for each other creature you control.

Flash
Rites of Banishment — When this creature enters, destroy target attacking creature. If that creature is a Demon, exile it instead.

This spell costs less to cast if it targets a tapped creature.
Destroy target creature.

Flying
This creature can block any number of creatures.
Whenever this creature blocks, it gets +1/+1 until end of turn for each creature it's blocking.

Backup 1
Flying
Whenever this creature attacks, return target nonland permanent card with mana value X or less from your graveyard to the battlefield, where X is this creature's power.

Flying
Whenever a creature you control becomes blocked, you may untap that creature and remove it from combat.

Flying
Whenever Gwaihir attacks, target attacking creature gains flying until end of turn.
At the beginning of each end step, if you gained 3 or more life this turn, create a 3/3 white Bird creature token with flying and "Whenever this token attacks, target attacking creature gains flying until end of turn."

Whenever this creature enters or attacks, put a +1/+1 counter on target creature you control with power 2 or less.

This spell costs less to cast if it targets a tapped creature.
Exile target creature.

When this creature enters, tap target creature an opponent controls.

Rally — Whenever this creature or another Ally you control enters, creatures you control gain indestructible until end of turn.

Flying
, Exile this card from your graveyard: Create two 1/1 white Spirit creature tokens with flying. Activate only if you control an enchantment and only as a sorcery.

Whenever you cast a Spirit or Arcane spell, regenerate target creature.

Destroy target creature with power 4 or greater.
Investigate.

Flying
Soulshift 4

Search your library for up to two planeswalker cards, reveal them, put them into your hand, then shuffle.

Ascend
Other artifact creatures you control get +2/+2 as long as you have the city's blessing.
At the beginning of each upkeep, create a 1/1 colorless Gnome artifact creature token.

Enrage — Whenever this creature is dealt damage, you gain 2 life.