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.

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	Staff of Calm R Artifact Staff of Calm enters the battlefield with X healing counters on it. You can't lose the game and your opponent can't win the game. Whenever damage would be dealt to you, instead remove that many healing counters from Staff of Calm. If there are no healing counters on Staff of Calm, sacrifice it, then shuffle your graveyard into your library.	Time-Faced Fink U Creature – Noggle Rogue Discard Time-Faced Fink: remove all counters on target permanent or exiled card, or double them. When Time-Faced Fink enters the battlefield, remove all counters on target permanent or exiled card, or double them. 3/2	Corps Recruiter U Creature – Human Soldier , , Sacrifice a land: Search your library for a Soldier card and a Plains card, reveal them, and put them into your hand. Then shuffle your library. 3/3	Velvet Fungus U Creature – Fungus : Put a 1/1 green Saproling token into play. Whenever a Saproling dies, put a spore counter on Velvet Fungus. Remove three spore counters from Velvet Fungus: Prevent all combat damage that would be dealt this turn. 1/1
Snowball Fight C Instant Until end of turn, blocking creatures neither deal, nor receive combat damage, and gain ": Deal 1 damage to target attacking creature".	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.	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	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
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.	Corona of Power C Snow Snow Snow Enchantment – Aura Enchant green creature. Enchanted creature gains ": Deal damage to target player equal to this creature's power. I call on forest's strength – on every thorn on every bramble – for their mass to break our enemies. -from The Fire within All	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.	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.	Island B Basic Land – Island

Walking Nightmuse (common, foil)
Staff of Calm (rare)
Time-Faced Fink (uncommon)
Corps Recruiter (uncommon)
Velvet Fungus (uncommon)
Snowball Fight (common)
Prismatic Surge (common)
Evangelizing Aven (common)
Necrospawn Liege (common)
Walking Nightmuse (common)
Harmonic Vale (common)
Corona of Power (common)
Curio Curse (common)
Steadfast Assault (common)
Island (basic)