Backup 1 (When this creature enters, put a +1/+1 counter on target creature. If that's another creature, it gains the following abilities until end of turn.)

Deathtouch

Whenever this creature deals combat damage to a player or battle, return target creature card from your graveyard to the battlefield.

When Author of Shadows enters, exile all opponents' graveyards. Choose a nonland card exiled this way. You may cast that card for as long as it remains exiled, and you may spend mana as though it were mana of any color to cast that spell.

Creatures your opponents control get -1/-1 until end of turn. (Then exile this card. You may cast the creature later from exile.)

Flying

Whenever Fiend of the Shadows deals combat damage to a player, that player exiles a card from their hand. You may play that card for as long as it remains exiled.

Sacrifice a Human: Regenerate Fiend of the Shadows.

Lifelink

Whenever Horrid Shadowspinner attacks, you may draw cards equal to its power. If you do, discard that many cards.

Whenever Mardu Shadowspear attacks, each opponent loses 1 life.

Dash (You may cast this spell for its dash cost. If you do, it gains haste, and it's returned from the battlefield to its owner's hand at the beginning of the next end step.)

Destroy target creature that's one or more colors.

Whenever a creature dies, scry 1. (Look at the top card of your library. You may put that card on the bottom.)

: Each opponent loses 2 life and you gain 2 life. Activate only if there are four or more creature cards in your graveyard.

Equipped creature gets +1/+1 and has trample and lifelink.

: Permanents your opponents control lose hexproof and indestructible until end of turn.

Equip

Flying

Whenever you cycle or discard a card, Shadowstorm Vizier gets +1/+1 until end of turn.

When Skemfar Shadowsage enters, choose one —

• Each opponent loses X life, where X is the greatest number of creatures you control that have a creature type in common.

• You gain X life, where X is the greatest number of creatures you control that have a creature type in common.

Enchant creature

Whenever enchanted creature is dealt damage, it deals that much damage to its controller.

Defender (This creature can't attack.)

Prevent all damage that would be dealt to Wall of Shadows by creatures it's blocking.

Wall of Shadows can't be the target of spells that can target only Walls or of abilities that can target only Walls.