Spell Blast

Counter target spell with mana value X. (For example, if that spell's mana cost is {3}{U}{U}, X is 5.)

Sea Serpent

Sea Serpent can't attack unless defending player controls an Island.
When you control no Islands, sacrifice Sea Serpent.

Weakness

Enchant creature
Enchanted creature gets -2/-1.

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.)

Plague Rats

Plague Rats's power and toughness are each equal to the number of creatures named Plague Rats on the battlefield.

Demonic Tutor

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

Ancestral Recall

Mox Sapphire

Power Sink

Counter target spell unless its controller pays {X}. If that player doesn't, they tap all lands with mana abilities they control and lose all unspent mana.

Lord of the Pit

Flying, trample
At the beginning of your upkeep, sacrifice a creature other than Lord of the Pit. If you can't, Lord of the Pit deals 7 damage to you.

Frozen Shade

{B}: Frozen Shade gets +1/+1 until end of turn.

Unsummon

Return target creature to its owner's hand.

Psychic Venom

Enchant land
Whenever enchanted land becomes tapped, Psychic Venom deals 2 damage to that land's controller.

Drudge Skeletons

{B}: Regenerate Drudge Skeletons. (The next time this creature would be destroyed this turn, it isn't. Instead tap it, remove all damage from it, and remove it from combat.)

Dark Ritual

Howl from Beyond

Target creature gets +X/+0 until end of turn.

Scavenging Ghoul

At the beginning of each end step, put a corpse counter on Scavenging Ghoul for each creature that died this turn.
Remove a corpse counter from Scavenging Ghoul: Regenerate Scavenging Ghoul.

Island

Swamp

Raise Dead

Return target creature card from your graveyard to your hand.

Glasses of Urza

Cursed Land

Enchant land
At the beginning of the upkeep of enchanted land's controller, Cursed Land deals 1 damage to that player.

Prodigal Sorcerer

{T}: Prodigal Sorcerer deals 1 damage to any target.

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