He Who Hungers

Flying
, Sacrifice a Spirit: Target opponent reveals their hand. You choose a card from it. That player discards that card. Activate this ability only any time you could cast a sorcery.
Soulshift 4 (When this creature dies, you may return target Spirit card with converted mana cost 4 or less from your graveyard to your hand.)

Kabuto Moth

Flying
: Target creature gets +1/+2 until end of turn.

Hundred-Talon Kami

Flying
Soulshift 4 (When this creature dies, you may return target Spirit card with converted mana cost 4 or less from your graveyard to your hand.)

Ryusei, the Falling Star

Flying
When Ryusei, the Falling Star dies, it deals 5 damage to each creature without flying.

Furnace Dragon

Affinity for artifacts (This spell costs less to cast for each artifact you control.)
Flying
When Furnace Dragon enters the battlefield, if you cast it from your hand, exile all artifacts.

Somber Hoverguard

Affinity for artifacts (This spell costs less to cast for each artifact you control.)
Flying

Furnace Dragon

Affinity for artifacts (This spell costs less to cast for each artifact you control.)
Flying
When Furnace Dragon enters the battlefield, if you cast it from your hand, exile all artifacts.

Eternal Dragon

Flying
: Return Eternal Dragon from your graveyard to your hand. Activate this ability only during your upkeep.
Plainscycling (, Discard this card: Search your library for a Plains card, reveal it, put it into your hand, then shuffle your library.)

Exalted Angel

Flying
Whenever Exalted Angel deals damage, you gain that much life.
Morph (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)

Eternal Dragon

Flying
: Return Eternal Dragon from your graveyard to your hand. Activate this ability only during your upkeep.
Plainscycling (, Discard this card: Search your library for a Plains card, reveal it, put it into your hand, then shuffle your library.)

Two-Headed Dragon

Flying
Menace (This creature can’t be blocked except by two or more creatures.)
Two-Headed Dragon can block an additional creature each combat.
: Two-Headed Dragon gets +2/+0 until end of turn.

Hoverguard Sweepers

Flying
When Hoverguard Sweepers enters the battlefield, you may return up to two target creatures to their owners’ hands.

Advanced Hoverguard

Flying
: Advanced Hoverguard gains shroud until end of turn. (It can’t be the target of spells or abilities.)

Ebon Drake

Flying
Whenever a player casts a spell, you lose 1 life.

Furnace Whelp

Flying (This creature can’t be blocked except by creatures with flying or reach.)
: Furnace Whelp gets +1/+0 until end of turn.

Skyreach Manta

Sunburst (This enters the battlefield with a +1/+1 counter on it for each color of mana spent to cast it.)
Flying

Auriok Windwalker

Flying
: Attach target Equipment you control to target creature you control.

Qumulox

Affinity for artifacts (This spell costs less to cast for each artifact you control.)
Flying

Mephidross Vampire

Flying
Each creature you control is a Vampire in addition to its other creature types and has “Whenever this creature deals damage to a creature, put a +1/+1 counter on this creature.”

Skyhunter Prowler

Flying, vigilance (This creature can’t be blocked except by creatures with flying or reach, and attacking doesn’t cause this creature to tap.)

Emissary of Despair

Flying
Whenever Emissary of Despair deals combat damage to a player, that player loses 1 life for each artifact they control.