Demonic Tutor

Search your library for a card, put that card into your hand, then shuffle your library.

Traitorous Instinct

Gain control of target creature until end of turn. Untap that creature. Until end of turn, it gets +2/+0 and gains haste.

Dark Revenant

Flying
When Dark Revenant dies, put it on top of its owner’s library.

Ethereal Armor

Enchant creature
Enchanted creature gets +1/+1 for each enchantment you control and has first strike.

Rakdos’s Return

Rakdos’s Return deals X damage to target opponent or planeswalker. That player or that planeswalker’s controller discards X cards.

Harbor Serpent

Islandwalk (This creature can’t be blocked as long as defending player controls an Island.)
Harbor Serpent can’t attack unless there are five or more Islands on the battlefield.

Spiked Baloth

Trample (This creature can deal excess combat damage to the player or planeswalker it’s attacking.)

Preyseizer Dragon

Flying
Devour 2 (As this enters the battlefield, you may sacrifice any number of creatures. This creature enters the battlefield with twice that many +1/+1 counters on it.)
Whenever Preyseizer Dragon attacks, it deals damage to any target equal to the number of +1/+1 counters on Preyseizer Dragon.

Fiery Fall

Fiery Fall deals 5 damage to target creature.
Basic landcycling (, Discard this card: Search your library for a basic land card, reveal it, put it into your hand, then shuffle your library.)

Hellkite Hatchling

Devour 1 (As this enters the battlefield, you may sacrifice any number of creatures. This creature enters the battlefield with that many +1/+1 counters on it.)
Hellkite Hatchling has flying and trample if it devoured a creature.

Vanishment

Put target nonland permanent on top of its owner’s library.
Miracle (You may cast this card for its miracle cost when you draw it if it’s the first card you drew this turn.)

Archwing Dragon

Flying, haste
At the beginning of the end step, return Archwing Dragon to its owner’s hand.

Into the Void

Return up to two target creatures to their owners’ hands.

Essence Harvest

Target player loses X life and you gain X life, where X is the greatest power among creatures you control.

Druids’ Repository

Whenever a creature you control attacks, put a charge counter on Druids’ Repository.
Remove a charge counter from Druids’ Repository: Add one mana of any color.

Altar of the Lost

Altar of the Lost enters the battlefield tapped.
: Add two mana in any combination of colors. Spend this mana only to cast spells with flashback from a graveyard.

Briarpack Alpha

Flash (You may cast this spell any time you could cast an instant.)
When Briarpack Alpha enters the battlefield, target creature gets +2/+2 until end of turn.

Blasphemous Act

This spell costs less to cast for each creature on the battlefield.
Blasphemous Act deals 13 damage to each creature.

Infernal Plunge

As an additional cost to cast this spell, sacrifice a creature.
Add .

Ashmouth Hound

Whenever Ashmouth Hound blocks or becomes blocked by a creature, Ashmouth Hound deals 1 damage to that creature.

Call to the Grave

At the beginning of each player’s upkeep, that player sacrifices a non-Zombie creature.
At the beginning of the end step, if no creatures are on the battlefield, sacrifice Call to the Grave.

Harbor Serpent

Islandwalk (This creature can’t be blocked as long as defending player controls an Island.)
Harbor Serpent can’t attack unless there are five or more Islands on the battlefield.

Spawnwrithe

Trample
Whenever Spawnwrithe deals combat damage to a player, create a token that’s a copy of Spawnwrithe.