Spawn of Mayhem

Spectacle (You may cast this spell for its spectacle cost rather than its mana cost if an opponent lost life this turn.)
Flying, trample
At the beginning of your upkeep, Spawn of Mayhem deals 1 damage to each player. Then if you have 10 or less life, put a +1/+1 counter on Spawn of Mayhem.

Seraph of the Scales

Flying
: Seraph of the Scales gains vigilance until end of turn.
: Seraph of the Scales gains deathtouch until end of turn.
Afterlife 2 (When this creature dies, create two 1/1 white and black Spirit creature tokens with flying.)

Syndicate Messenger

Flying
Afterlife 1 (When this creature dies, create a 1/1 white and black Spirit creature token with flying.)

Sphinx of Foresight

You may reveal this card from your opening hand. If you do, scry 3 at the beginning of your first upkeep.
Flying
At the beginning of your upkeep, scry 1.

Seraph of the Scales

Flying
: Seraph of the Scales gains vigilance until end of turn.
: Seraph of the Scales gains deathtouch until end of turn.
Afterlife 2 (When this creature dies, create two 1/1 white and black Spirit creature tokens with flying.)

Hydroid Krasis

When you cast this spell, you gain half X life and draw half X cards. Round down each time.
Flying, trample
Hydroid Krasis enters the battlefield with X +1/+1 counters on it.

Senate Griffin

Flying
When Senate Griffin enters the battlefield, scry 1.

Seraph of the Scales

Flying
: Seraph of the Scales gains vigilance until end of turn.
: Seraph of the Scales gains deathtouch until end of turn.
Afterlife 2 (When this creature dies, create two 1/1 white and black Spirit creature tokens with flying.)

The Haunt of Hightower

Flying, lifelink
Whenever The Haunt of Hightower attacks, defending player discards a card.
Whenever a card is put into an opponent’s graveyard from anywhere, put a +1/+1 counter on The Haunt of Hightower.

Archway Angel

Flying
When Archway Angel enters the battlefield, you gain 2 life for each Gate you control.

Sigarda, Host of Herons

Flying, hexproof
Spells and abilities your opponents control can’t cause you to sacrifice permanents.

Emancipation Angel

Flying
When Emancipation Angel enters the battlefield, return a permanent you control to its owner’s hand.

Stitched Drake

As an additional cost to cast this spell, exile a creature card from your graveyard.
Flying

Sigarda, Host of Herons

Flying, hexproof
Spells and abilities your opponents control can’t cause you to sacrifice permanents.

Firewing Phoenix

Flying
: Return Firewing Phoenix from your graveyard to your hand.

Reveillark

Flying
When Reveillark leaves the battlefield, return up to two target creature cards with power 2 or less from your graveyard to the battlefield.
Evoke (You may cast this spell for its evoke cost. If you do, it’s sacrificed when it enters the battlefield.)

Iridescent Drake

Flying
When Iridescent Drake enters the battlefield, put target Aura card from a graveyard onto the battlefield under your control attached to Iridescent Drake.

Crow of Dark Tidings

Flying
When Crow of Dark Tidings enters the battlefield or dies, mill two cards. (Put the top two cards of your library into your graveyard.)

Angel of Despair

Flying
When Angel of Despair enters the battlefield, destroy target permanent.

Balefire Dragon

Flying
Whenever Balefire Dragon deals combat damage to a player, it deals that much damage to each creature that player controls.

Wall of Reverence

Defender, flying
At the beginning of your end step, you may gain life equal to the power of target creature you control.

Emrakul, the Aeons Torn

This spell can’t be countered.
When you cast this spell, take an extra turn after this one.
Flying, protection from spells that are one or more colors, annihilator 6
When Emrakul, the Aeons Torn is put into a graveyard from anywhere, its owner shuffles their graveyard into their library.