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.

Lord Zedruu, the Lost M Legendary Creature – Minotaur Demon Flying, trample At the beginning of your upkeep, target opponent gains control of a creature you control. At the end of turn, draw X cards, and lose X life, where X is equal to the number of permanents you own that your opponents control. 7/9	Soul of the Machine U Enchantment Whenever an opponent casts an artifact, gain 3 life. Whenever an opponent activates an ability on an artifact, gain 3 life.	Chrysalis Carapace U Enchantment – Aura Enchant Creature , Tap untapped enchanted creature: Put a +1/+1 counter on enchanted creature. , Untap tapped enchanted creature: Enchanted creature gains flying.	Niven's Battlestone U Artifact When Niven's Battlestone enters the battlefield, target red creature can and must be blocked by exactly two creatures this turn. : Add to your mana pool. , , Sacrifice Niven's Battlestone: Destroy all non-land permanents with a converted mana cost of three or less.	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.
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	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".	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.	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	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
Krimson Kount C Creature – Kobold Noble Whenever you cast a Kobold, put a Destiny counter on Krimson Kount. Remove a Destiny counter from Krimson Kount: Krimson Kount becomes a 3/4 Kobold Warrior Spirit until end of turn. 0/1	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	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	Blessing Unbent C Instant As you cast this spell, you may untap two tapped white creatures. When you do, copy it and you may choose a new target for the copy. Target creature gains +2/+2 until end of turn.	Mountain B Basic Land – Mountain

Lord Zedruu, the Lost (mythic)
Soul of the Machine (uncommon)
Chrysalis Carapace (uncommon)
Niven's Battlestone (uncommon)
Steadfast Assault (common)
Rat Nest Ogre (common)
Snowball Fight (common)
Harmonic Vale (common)
Plume Serpent (common)
Friend Ward (common)
Krimson Kount (common)
Thanatos Drake (common)
Kyren Tax Collector (common)
Blessing Unbent (common)
Mountain (basic)