Underworld Dreams

Whenever an opponent draws a card, Underworld Dreams deals 1 damage to that player.

Grave Pact

Whenever a creature you control dies, each other player sacrifices a creature.

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

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

First strike
When Nekrataal enters, destroy target nonartifact, nonblack creature. That creature can't be regenerated.

When Festering Goblin dies, target creature gets -1/-1 until end of turn.

At the beginning of your upkeep, you draw a card and you lose 1 life.

Flying
When Foul Imp enters, you lose 2 life.

Destroy target nonblack creature. It can't be regenerated.