Flying
Escape — , Exile five other cards from your graveyard. (You may cast this card from your graveyard for its escape cost.)
This creature escapes with "Whenever this creature deals combat damage to a player, you may cast an artifact, instant, or sorcery spell from among cards exiled with this creature without paying its mana cost."

Level up

Flying
When this creature enters, you may exile two creature cards from your graveyard. If you do, draw a card.

Ward
This creature has flying as long as it's modified. (Equipment, Auras you control, and counters are modifications.)

Vigilance
: Reveal the top card of your library. If it's a land card, put it onto the battlefield. Otherwise, put it into your hand.

Flying
Whenever an artifact you control enters, you may draw a card. If you do, discard a card.

Flying
Whenever this creature attacks, create a 1/1 colorless Soldier artifact creature token.
Tap three untapped Soldiers you control: Draw a card.

Assist (Another player can pay up to of this spell's cost.)
Flying
When this creature enters, target player gains 4 life.

Flying
Exhaust — : Put two +1/+1 counters on this creature. (Activate each exhaust ability only once.)

Reach
Whenever this creature blocks a creature with flying, this creature gets +5/+0 until end of turn.

Flying
Double strike

Flying
Whenever Skysovereign enters or attacks, it deals 3 damage to target creature or planeswalker an opponent controls.
Crew 3

Vigilance
Reach

Flying
When this creature enters, exile up to one other target creature you control. Return it to the battlefield under its owner's control at the beginning of the next end step.

Flying
Discard a creature card: This creature gets +2/+2 until end of turn.

: Add .

: Regenerate this creature.

When this creature enters, you may search your library for up to three cards named Skyshroud Sentinel, reveal them, put them into your hand, then shuffle.

: You may put a land card from your hand onto the battlefield. Activate only as a sorcery.

, : Search your library for an Elf permanent card, put it onto the battlefield, then shuffle.

Reach
When Skyshroud Lookout enters, seek an Elf card.

This land enters tapped.
: Add .
: Add or . This land deals 1 damage to you.

Flying, vigilance

This creature gets +1/+2 as long as an opponent controls a nonbasic land.

: Add .
: Add or .

If you control a Forest, rather than pay this spell's mana cost, you may have each other player gain 5 life.