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.

Mons's Goblin Hive R Artifact , : Put a 1/1 red Goblin token named Rundvelt Goblin onto the battlefield. Whenever a creature named Rundvelt Goblin attacks, all Goblins get +1/+0 until end of turn. Thundercloud, my tuchus. It's more of a vibrating bone pudding, if you ask me. -Dadardado, Rundvelt Goblin	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."	Sapling Grove U Land , : Add to your mana pool. Level Up If Sapling Grove has 3 level counters, it becomes a 3/3 green Treefolk with trample and "Remove a level counter from Sapling Grove: Sapling Grove gets +2/+2 until end of turn." (It's still a land.)	Filligreed Mirror U Sorcery Choose one – Put a token copy of all non-token creatures you control on the battlefield; or put a token copy of all token creatures you control on the battlefield. Entwine (Choose both, if you pay the entwine cost.)	Monsivore Rex C Creature – Lhurgoyf First strike Monsivore Rex gets +1/+0 for each Mountain you control and for each Mountain in your graveyard. "Oh, Saffi! Must you overreact to -" - Hans Eriksson, last words. 0/1
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	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".	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	Unloved Devil C Creature – Devil Mercenary Flying It's hard to call it flying, the way they seem to fall out of the sky, collapsing on their prey. 1/1	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
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	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.	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.	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	Mountain B Basic Land – Mountain

Mons's Goblin Hive (rare)
Abductive Discovery (uncommon)
Sapling Grove (uncommon)
Filligreed Mirror (uncommon)
Monsivore Rex (common)
Friend Ward (common)
Snowball Fight (common)
Corona of Power (common)
Unloved Devil (common)
Evangelizing Aven (common)
Thanatos Drake (common)
Cursed Blade (common)
Prismatic Surge (common)
Shade of Prey (common)
Mountain (basic)