Mashup: the Gathering Workbench: Virtual Booster

Riddle of Snakes    R  Instant – Trap Reveal cards from the top of your library until you reveal two nonland cards with a converted mana cost of four or less. You may cast them without paying their mana cost. Shuffle your library, then, if an opponent cast a blue or black spell this turn, put Riddle of Snakes into your library third from the top.	Phyrexian Torchgunner    U  Artifact Creature – Goblin Kicker – Deal 3 damage to target creature or player. If you paid the kicker cost, Phyrexian Torchgunner enters the battlefield with two -1/-1 counters on it. 5/5	Institute of Arcane Sewers    U  Land , : Add to your mana pool. : Until end of turn, Institute of Arcane Sewers becomes a 1/1 blue and red Merfolk Wizard with ": Institute of Arcane Sewers deals one damage to target creature or player."	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.	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.
Evangelizing Aven    C  Creature – Bird Soldier Flying As long as Evangelizing Aven is tapped, it gets +2/-2. "They keep screaching 'Repent! Repent! Repent!'. What will it take to stop their infernal squaking?" - Halina, Dwarven Trader 2/4	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.	Claws of the Viashino    C  Enchantment – Aura Enchant creature you control Flash : Enchanted creature gets +1/+0 until end of turn. Return Claws of the Viashino to its owner's hand: Sacrifice the enchanted creature and add to your mana pool.	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	Walking Nightmuse    C  Creature – Spirit Creatures can't block Walking Nightmuse unless their controller discards a card for each creature he or she controls that's blocking Walking Nightmuse. 4/2
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.	Steaming Sink Pits    C  Enchantment – Aura Enchant Land Enchanted Land is a Swamp and Mountain. Whenever enchanted land becomes tapped, that land deals two damage to its controller.	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.	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	Island    B  Basic Land – Island

Riddle of Snakes (rare)
Phyrexian Torchgunner (uncommon)
Institute of Arcane Sewers (uncommon)
Protect the Master (uncommon)
Harmonic Vale (common)
Evangelizing Aven (common)
Prismatic Surge (common)
Claws of the Viashino (common)
Necrospawn Liege (common)
Walking Nightmuse (common)
Curio Curse (common)
Steaming Sink Pits (common)
Book Slide (common)
Krimson Kount (common)
Island (basic)