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.

Military Library R Enchantment Play with the top card of your library revealed. Whenever you draw a card, creatures you control that share a color with it get +1/+1 until end of turn. : Draw a card, then either pay 4 life, or put a card from your hand on top of your library.	Gates of Velis Vel U Enchantment Untapped creatures you control are walls and gain +0/+2. Tapped creatures you control are all creature types except walls and gain +2/+0.	Volcanic Cannonade U Sorcery As an additional cost to cast Volcanic Cannonade, sacrifice any number of creatures you control. Deal X damage to up to X target creatures and/or players, where X is equal to the number of creatures sacrificed. "Oh, goblins fly all the time. They're never happy about it, mind you." -Ethan Sable, Icatian Lieutenant	Necromancer's Echo U Creature – Skeleton Wizard Morph (You may cast this face down as a 2/2 creature for . Turn it face up any time for its morph cost.) When you turn Necromancer's Echo face up, return a creature from your graveyard to your hand. : Return Necromancer's Echo from your graveyard to the battlefield tapped and face down. 1/1	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
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.	Anti-Aura Acolyte C Creature – Elemental Shaman Protection from enchantments , Discard Anti-Aura Acolyte: Target creature gains protection from enchantments until end of turn. 2/2	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".	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	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.
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	Cho-Arrim Augury C Instant If an opponent controls a Swamp, and you control a Plains, you may cast Cho-Arrim Augury without paying its mana cost. Draw a card, then put a card from your hand on top of your library. Then look at the top four cards of your library and put them back in any order.	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.	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.	Island B Basic Land – Island

Military Library (rare)
Gates of Velis Vel (uncommon)
Volcanic Cannonade (uncommon)
Necromancer's Echo (uncommon)
Thanatos Drake (common)
Explosive Shoots (common)
Anti-Aura Acolyte (common)
Snowball Fight (common)
Coast Guarder (common)
Pull of Pyromancy (common)
Shade of Prey (common)
Cho-Arrim Augury (common)
Harmonic Vale (common)
Prismatic Surge (common)
Island (basic)