Mashup: the Gathering Workbench: Virtual Booster

This booster was generated with modern collation since the cardset contains mythics: 1 rare / mythic, 3 uncommons, 10 commons, 1 basic land.
You could alternatively have 15 random cards regardless of rarity.

Void Specter R Creature – Specter When Void Specter deals combat damage to a player, that player reveals cards from his or her hand equal to the amount of damage Void Specter dealt and you choose one of them. That player discards that card. : Void Specter gets -0/-3 and gains flying until end of turn. 3/4	Graveburst U Sorcery Return a creature from your graveyard to the battlefield, then tap it unless you control a Mountain. That creature gains haste until end of turn, and is a black Zombie in addition to its other types.	Scalawag Support Team U Creature – Human Pirate Defender , : Deal 1 damage to each creature with a converted mana cost of X. Those creatures cannot attack this turn. "Lower! Lower! Aim for the docks!" -Ramireze DePietro 4/4	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.	Unloved Devil C Creature – Devil Mercenary Flying It's hard to call it flying, the way they seem to fall out of the sky, collapsing on their prey. 1/1
Holy Favor C Enchantment – Aura Enchant Creature Enchanted creature gets +2/+1. At end of turn, return Holy Favor to its owner's hand.	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.	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	Unholy Pact C Enchantment – Aura Enchant Creature Enchanted creature gets +2/+1. When enchanted creature dies, return that card to the battlefield under your control. "You know how it is. Everyday it's 'trade my soul this', and 'give me more power that'. Of course I don't have more time to visit, Mum."	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.
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.	Shade of Prey C Creature – Bird Shade Flying Sacrifice a land: Return Shade of Prey to its owner's hand. : Shade of Prey gets +1/+1 until end of turn. 2/1	Rat Nest Ogre C Creature – Ogre Discard a card at random from your hand: Rat Nest Ogre can't block this turn. Any player may play this ability. "Been living with the rats too long. Can no longer see. Rats don't mind, though. Just give me their eyes." 4/1	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.	Island B Basic Land – Island

Void Specter (rare)
Graveburst (uncommon)
Scalawag Support Team (uncommon)
Protect the Master (uncommon)
Unloved Devil (common)
Holy Favor (common)
Curio Curse (common)
Krimson Kount (common)
Unholy Pact (common)
Book Slide (common)
Claws of the Viashino (common)
Shade of Prey (common)
Rat Nest Ogre (common)
Steaming Sink Pits (common)
Island (basic)