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	Phyrexian Smelthoarder U Creature – Horror Phyrexian Smelthoarder doesn't untap during your untap step. When Phyrexian Smelthoarder deals combat damage to an opponent, draw two cards. , Lose 2 life: Untap Phyrexian Smelthoarder. 3/4	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.	Mace of Ideas U Artifact – Equipment Equip Equipped creature gets +1/+1 for each land type among all lands you control. Ideas, like weapons, can only realize their true potential when they are shared.	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
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	Creative Eyry C Instant When you cast Creative Eyry, cannot be greater than the number of flying creatures you control. Draw X cards.	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.	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.	Savaen Blessing C Enchantment – Aura Enchant Land Enchanted Land gains protection from other enchantments. Sacrfice Savaen Blessing: Destroy target enchantment. "When the land is pure, the magic will follow." -Sidaen of Savaen
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	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	Holy Favor C Enchantment – Aura Enchant Creature Enchanted creature gets +2/+1. At end of turn, return Holy Favor to its owner's hand.	Explosive Shoots C Sorcery As an additional cost to cast Explosive Shoots, sacrifice a land. Search through your library for a basic land, put it onto the battlefield, then shuffle your library. Each player gains 1 life for each basic land type they control, then Explosive Shoots deals 3 damage to each player.	Mountain B Basic Land – Mountain

Mons's Goblin Hive (rare)
Phyrexian Smelthoarder (uncommon)
Niven's Battlestone (uncommon)
Mace of Ideas (uncommon)
Evangelizing Aven (common)
Shade of Prey (common)
Creative Eyry (common)
Prismatic Surge (common)
Harmonic Vale (common)
Savaen Blessing (common)
Krimson Kount (common)
Corona of Power (common)
Holy Favor (common)
Explosive Shoots (common)
Mountain (basic)