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.

Pardic Excessor R Creature – Dragon Flying At the beginning of each opponent's upkeep, that player chooses one – They can't cast spells this turn; or, Until the beginning of that player's next turn, whenever a permanent you control would deal damage to that player, it deals double that damage to that player instead. : Pardic Excessor gains +1/+0 until end of turn. 4/4	Suddenly Solifuge U Instant Choose one or more — Target creature gains haste until end of turn; or target creature's power becomes 4 until end of turn; and/or target creature's toughness becomes 1 until end of turn	Seasonal Front U Sorcery Choose one – Search your library for X basic lands, put them onto the battlefield, tapped, then shuffle your library; or, destroy X target lands. Entwine (Choose both if you pay the entwine cost.)	Abductive Discovery U Sorcery Choose one or both – Return target sorcery card from your graveyard to your hand; and/or return a card at random from your graveyard to your hand. "No one can predict when or where lightning will strike. I'm good at guessing, though."	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
Holy Favor C Enchantment – Aura Enchant Creature Enchanted creature gets +2/+1. At end of turn, return Holy Favor to its owner's hand.	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.	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	Corona of Power C Snow Snow Snow Enchantment – Aura Enchant green creature. Enchanted creature gains ": Deal damage to target player equal to this creature's power. I call on forest's strength – on every thorn on every bramble – for their mass to break our enemies. -from The Fire within All	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
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.	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	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.	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.	Forest B Basic Land – Forest

Pardic Excessor (rare)
Suddenly Solifuge (uncommon)
Seasonal Front (uncommon)
Abductive Discovery (uncommon)
Thanatos Drake (common)
Holy Favor (common)
Cursed Blade (common)
Shade of Prey (common)
Corona of Power (common)
Coast Guarder (common)
Curio Curse (common)
Kyren Tax Collector (common)
Harmonic Vale (common)
Pull of Pyromancy (common)
Forest (basic)