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.

Stone Thrower R Creature – Ogre Barbarian At the beginning of your upkeep you may search through your library for a Sorcery that targets a land, cast it without paying its mana cost targeting a land, then shuffle your library. "Gorgril sad. No one ever want to play 'catch'." 4/4	Defender of the Sedge U Creature – Troll When Defender of the Sedge enters the battlefield, search through your library for a creature with a converted mana cost equal to or less than the number of creatures an opponent has in play, and put it on the battlefield. Then, shuffle your library. : Regenerate Defender of the Sedge. 2/2	Darigaaz's Enforcer U Artifact Creature – Golem , Sacrifice Darigaaz's Enforcer: Target player sets aside three cards at random from his or her hand. For each of those cards, that player chooses either to discard it, or put it on top of his or her library. 3/3	Villainous Heart U Creature – Demon When Villainous Heart enters the battlefield, sacrifice an Ogre, or sacrifice Villainous Heart. When Villainous Heart attacks, all Ogres and Demons get +2/+2 until end of turn. : Regenerate Villainous Heart. 3/2	Kyren Tax Collector C Creature – Goblin Advisor Haste If an opponent controls more lands than you, you may play Kyren Tax Collector without paying its mana cost. In Mercandia, there's a tax for future land you will buy. 1/1
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.	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	Turn to Brambles C Instant Target creature becomes a 2/3 green Plant Wall with defender and ": Regenerate this creature." until end of turn. Wrap arms and roots together, be convulsed with grief, and bring back chaos out of shape. - Conrad Aiken, The Room	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	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
Anti-Aura Acolyte C Creature – Elemental Shaman Protection from enchantments , Discard Anti-Aura Acolyte: Target creature gains protection from enchantments until end of turn. 2/2	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.	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	Mountain B Basic Land – Mountain

Stone Thrower (rare)
Defender of the Sedge (uncommon)
Darigaaz's Enforcer (uncommon)
Villainous Heart (uncommon)
Kyren Tax Collector (common)
Pull of Pyromancy (common)
Necrospawn Liege (common)
Turn to Brambles (common)
Coast Guarder (common)
Evangelizing Aven (common)
Anti-Aura Acolyte (common)
Creative Eyry (common)
Steadfast Assault (common)
Walking Nightmuse (common)
Mountain (basic)