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.

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.	Volrath's Whim U Sorcery When you cast Volrath's Whim, any player may pay 5 life. If a player does, counter Volrath's Whim. Target player puts a card from their hand on top of their library. Then, look at the top four cards of that player's library and exile three of them.	Unrefine U Instant The next time target creature would deal combat damage to a player this turn, instead target opponent reveals that many cards from his or her hand and you choose one of them. That player discards that card and you draw a card. "There is evil in all things. Even innocence." -Cabal Patriarch	Impermanence U Enchantment Whenever an artifact becomes the target of a spell or ability, its controller sacrifices it. The Crystal hovered for centuries, unbreakable at the heart of the volcano. One glance from Zuk-Zook shattered it to pieces.	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
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	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	Plume Serpent C Creature – Serpent When Plume Serpent enters the battlefield, you may search your library for an Island card and put it onto the battlefield tapped under target player's control. If you do, shuffle your library. Plume Serpent can't attack unless defending player controls an Island. 6/5	Cursed Blade C Artifact – Equipment : Attach Cursed Blade to target creature. Equipped creature gets +1/+1. , Sacrifice Cursed Blade: Destroy the last creature Cursed Blade was equipped to.	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.
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	Coast Guarder C Creature – Bird Soldier Scout Flying Whenever an opponent casts a creature spell, put a +1/+1 counter on Coast Guarder. 2/1	Monsivore Rex C Creature – Lhurgoyf First strike Monsivore Rex gets +1/+0 for each Mountain you control and for each Mountain in your graveyard. "Oh, Saffi! Must you overreact to -" - Hans Eriksson, last words. 0/1	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.	Island B Basic Land – Island

Staff of Calm (rare)
Volrath's Whim (uncommon)
Unrefine (uncommon)
Impermanence (uncommon)
Unloved Devil (common)
Thanatos Drake (common)
Evangelizing Aven (common)
Plume Serpent (common)
Cursed Blade (common)
Claws of the Viashino (common)
Rat Nest Ogre (common)
Coast Guarder (common)
Monsivore Rex (common)
Curio Curse (common)
Island (basic)