Mashup: the Gathering Workbench: Virtual Booster

Slate of Arcanis    R  Legendary Artifact , , Return a creature you control to your hand: Draw a card for each creature you control. Those who cannot wait can etch their names into the slate, and an honorable death will be delivered to them.	Capitulated Keldon Lands    U  Land Capitulated Keldon Lands enters the battlefield tapped. : Add to your mana pool. : Keldon Megaliths deals 1 damage to target player. Activate this ability only if an opponent has no cards in hand.	Unnatural Fever    U  Enchantment Creatures you control get +2/+0. At the beginning of the end step, sacrifice Unnatural Fever, then gain 4 life for each tapped creature you control.	Protect the Master    U  Instant – Trap If your opponent controls an attacking creature with power greater than the number of cards in your hand, you may pay rather than pay Protect the Master's mana cost. Put two 3/3 white Djinn creature tokens with flying into play.	Prismatic Surge    C  Instant As an additional cost to casting Prismatic Surge, discard a card. Target creature gets +X/+0 where X is equal to the discarded card's converted mana cost, and has protection from the colors of the discarded card.
Book Slide    C  Instant When you cast Book Slide, X cannot be more than the number of attacking and blocking creatures on the battlefield. Draw X cards. Each day, the Librarians of Lat-Nam fight against the growing tide of books. The books are winning.	Cho-Arrim Augury    C  Instant If an opponent controls a Swamp, and you control a Plains, you may cast Cho-Arrim Augury without paying its mana cost. Draw a card, then put a card from your hand on top of your library. Then look at the top four cards of your library and put them back in any order.	Krimson Kount    C  Creature – Kobold Noble Whenever you cast a Kobold, put a Destiny counter on Krimson Kount. Remove a Destiny counter from Krimson Kount: Krimson Kount becomes a 3/4 Kobold Warrior Spirit until end of turn. 0/1	Thanatos Drake    C  Creature – Drake Flying , , Exile a card from your graveyard: Target player discards a card. Activate this ability only any time you could cast a sorcery. 2/4	Necrospawn Liege    C  Creature – Zombie Cleric Tap an untapped creature you control, or lose 1 life: Put a devotion counter on Necrospawn Liege. Remove five devotion counters from Necrospawn Liege: Draw a card. 3/3
Anti-Aura Acolyte    C  Creature – Elemental Shaman Protection from enchantments , Discard Anti-Aura Acolyte: Target creature gains protection from enchantments until end of turn. 2/2	Curio Curse    C  Enchantment – Aura Enchant Creature When enchanted creature deals damage to a player, look at the top three cards of your library, put one in your hand, put the rest back in any order, then sacrifice Curio Curse. Enchanted creature must attack if able.	Harmonic Vale    C  Enchantment As Harmonic Vale enters the battlefield, choose a color. Whenever a player casts a spell of the chosen color, you may pay . If you do, you gain 2 life.	Steadfast Assault    C  Sorcery Deal 1 damage to all creatures your opponents control. Creatures you control get +0/+3 until end of turn. Ha! Conviction? Your 'noble spirit' might win wars, but first you'll need to keep your flesh intact.	Swamp    B  Basic Land – Swamp

Slate of Arcanis (rare)
Capitulated Keldon Lands (uncommon)
Unnatural Fever (uncommon)
Protect the Master (uncommon)
Prismatic Surge (common)
Book Slide (common)
Cho-Arrim Augury (common)
Krimson Kount (common)
Thanatos Drake (common)
Necrospawn Liege (common)
Anti-Aura Acolyte (common)
Curio Curse (common)
Harmonic Vale (common)
Steadfast Assault (common)
Swamp (basic)