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.

Arch Concervator R Creature – Angel Flying, Vigilance You may pair Arch Concervator with an unpaired artifact when either enters the battlefield. They remain paired as long as both are on the battlefield. As long as Arch Concervator is paired with an artifact, neither permanent's abilities may be activated. 5/5	Carpet of Lava U Enchantment Flash At the beginning of each phase, add X red mana to your mana pool, where X is equal to the number of Islands all opponents control. At the beginning of the end of turn, sacrifice Carpet of Lava.	Verduran Schemers U Creature – Faerie Druid Flying When Verduran Schemers enters the battlefield, draw a card for each enchantment you control. 3/2	Elite Trapper U Creature – Merfolk Ranger , : Return target attacking creature to its owner's hand. , : Return all attacking creatures to their owner's hand. Activate this ability only if there are exactly two attacking creatures. Runaway lovers are her specialty. 3/3	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.
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.	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.	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".	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.	Learned Response C Instant You may pay 1 life and exile a blue card from your hand rather than pay Learned Response mana cost. Counter target non-creature spell.
Blightsoil Druid C Creature – Elf Druid , Pay 1 life: Add to your mana pool. "The land belongs to the murk as far as the eye can see. The deeper you sink, the more you can see." 1/2	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	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.	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	Forest B Basic Land – Forest

Arch Concervator (rare)
Carpet of Lava (uncommon)
Verduran Schemers (uncommon)
Elite Trapper (uncommon)
Cho-Arrim Augury (common)
Steadfast Assault (common)
Curio Curse (common)
Snowball Fight (common)
Claws of the Viashino (common)
Learned Response (common)
Blightsoil Druid (common)
Monsivore Rex (common)
Prismatic Surge (common)
Shade of Prey (common)
Forest (basic)