Khabál Ghoul

At the beginning of each end step, put a +1/+1 counter on Khabál Ghoul for each creature that died this turn.

Oubliette

When Oubliette enters the battlefield, target creature phases out until Oubliette leaves the battlefield. Tap that creature as it phases in this way. (Auras and Equipment phase out with it. While permanents are phased out, they’re treated as though they don’t exist.)

Demonic Tutor

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

Unsummon

Return target creature to its owner’s hand.

Volcanic Eruption

Destroy X target Mountains. Volcanic Eruption deals damage to each creature and each player equal to the number of Mountains put into a graveyard this way.

Hypnotic Specter

Flying
Whenever Hypnotic Specter deals damage to an opponent, that player discards a card at random.

Veteran Bodyguard

As long as Veteran Bodyguard is untapped, all damage that would be dealt to you by unblocked creatures is dealt to Veteran Bodyguard instead.

Drain Power

Target player activates a mana ability of each land they control. Then that player loses all unspent mana and you add the mana lost this way.

Weakness

Enchant creature
Enchanted creature gets -2/-1.

Psionic Blast

Psionic Blast deals 4 damage to any target and 2 damage to you.

Contract from Below

Remove Contract from Below from your deck before playing if you’re not playing for ante.
Discard your hand, ante the top card of your library, then draw seven cards.

Demonic Tutor

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

Psionic Blast

Psionic Blast deals 4 damage to any target and 2 damage to you.

Force of Nature

Trample (This creature can deal excess combat damage to the player or planeswalker it’s attacking.)
At the beginning of your upkeep, Force of Nature deals 8 damage to you unless you pay .

Volcanic Eruption

Destroy X target Mountains. Volcanic Eruption deals damage to each creature and each player equal to the number of Mountains put into a graveyard this way.