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.

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.	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	Brothers from the Slab U Creature – Human Druid : Reveal the top seven cards of your library, then put them on the bottom of your library in a random order. Add to your mana pool for each Druid revealed in this manner. We are cut from the same slab. Who among you is better than I? 2/2	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	Unnatural Fever U Enchantment Creatures you control get +2/+0. At the beginning of the end step, sacrifice Unnatural Fever, then gain 4 life for each tapped creature you control.
Friend Ward C Enchantment – Aura Enchant creature Enchanted creature gains protection from its colors. This effect does not remove Friend Ward. "When you wield authority, there is no greater threat to yourself, than yourself." -The Lord of Atlantis	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.	Savaen Blessing C Enchantment – Aura Enchant Land Enchanted Land gains protection from other enchantments. Sacrfice Savaen Blessing: Destroy target enchantment. "When the land is pure, the magic will follow." -Sidaen of Savaen	Mishra's Rite C Instant Tap two target lands, then add to your mana pool. Draw a card.	Wicked Witch Engine C Artifact Creature – Elemental Horror : Target player dealt damage by Wicked Witch Engine this turn loses 1 life. 2/2
Pull of Pyromancy C Enchantment When Pull of Pyromancy enters the battlefield, put a 3/3 Red Elemental creature token onto the battlefield. At the beginning of each player's upkeep, Pull of Pyromancy deals 1 damage to that player, unless he or she controls an Elemental.	Creative Eyry C Instant When you cast Creative Eyry, cannot be greater than the number of flying creatures you control. Draw X cards.	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.	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."	Swamp B Basic Land – Swamp

Carpet of Lava (uncommon, foil)
Arch Concervator (rare)
Brothers from the Slab (uncommon)
Unrefine (uncommon)
Unnatural Fever (uncommon)
Friend Ward (common)
Harmonic Vale (common)
Savaen Blessing (common)
Mishra's Rite (common)
Wicked Witch Engine (common)
Pull of Pyromancy (common)
Creative Eyry (common)
Steadfast Assault (common)
Unholy Pact (common)
Swamp (basic)