Demonic Tutor

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

Plains

Sol Ring

Armageddon

Swords to Plowshares

Exile target creature. Its controller gains life equal to its power.

Scrubland

Mind Twist

Target player discards X cards at random.

Erg Raiders

At the beginning of your end step, if Erg Raiders didn't attack this turn, Erg Raiders deals 2 damage to you unless it came under your control this turn.

Black Knight

First strike (This creature deals combat damage before creatures without first strike.)
Protection from white (This creature can't be blocked, targeted, dealt damage, or enchanted by anything white.)

Hypnotic Specter

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