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.

Icy Proctor R Creature – Crab Cleric Adrift (At the beginning of your upkeep, simultaneously exile all adrift creatures you control on the battlefield, and return all exiled adrift creatures you own to the battlefield. They gain haste.) All other blue creatures you control gain +1/+1. When Icy Proctor enters the battlefield, put two 1/1 blue crab tokens into play. 3/3	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	Unyaro Beekeeper U Creature – Insect Ranger , : Deal 1 Damage to target creature or player. Level Up When there are 3 level counters on Unyaro Beekeeper, flip it. 2/3 Unyaro Hivemaster C Creature – Insect Ranger , : Deal 2 damage to target creature or player. 3/4	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.	Wicked Witch Engine C Artifact Creature – Elemental Horror : Target player dealt damage by Wicked Witch Engine this turn loses 1 life. 2/2
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	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".	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.	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.	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
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	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	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.	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	Mountain B Basic Land – Mountain

Icy Proctor (rare)
Darigaaz's Enforcer (uncommon)
Unyaro Beekeeper (uncommon)
Chrysalis Carapace (uncommon)
Wicked Witch Engine (common)
Blightsoil Druid (common)
Snowball Fight (common)
Blessing Unbent (common)
Steadfast Assault (common)
Thanatos Drake (common)
Rat Nest Ogre (common)
Coast Guarder (common)
Prismatic Surge (common)
Turn to Brambles (common)
Mountain (basic)