Mashup: the Gathering Workbench: Virtual Booster

Volrath's Slaveyard    R  Enchantment Whenever a creature dies, put a doom counter on Volrath's Slaveyard. At the beginning of your upkeep, for each doom counter on Volrath's Slaveyard, you may return target creature card from your graveyard to your hand. : Remove a doom counter from Volrath's Slaveyard. Any player may activate this ability.	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.	Unnatural Fever    U  Enchantment Creatures you control get +2/+0. At the beginning of the end step, sacrifice Unnatural Fever, then gain 4 life for each tapped creature you control.	Velvet Fungus    U  Creature – Fungus : Put a 1/1 green Saproling token into play. Whenever a Saproling dies, put a spore counter on Velvet Fungus. Remove three spore counters from Velvet Fungus: Prevent all combat damage that would be dealt this turn. 1/1	Steaming Sink Pits    C  Enchantment – Aura Enchant Land Enchanted Land is a Swamp and Mountain. Whenever enchanted land becomes tapped, that land deals two damage to its controller.
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	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	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.	Necrospawn Liege    C  Creature – Zombie Cleric Tap an untapped creature you control, or lose 1 life: Put a devotion counter on Necrospawn Liege. Remove five devotion counters from Necrospawn Liege: Draw a card. 3/3	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
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	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	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.	Mountain    B  Basic Land – Mountain

Volrath's Slaveyard (rare)
Mace of Ideas (uncommon)
Unnatural Fever (uncommon)
Velvet Fungus (uncommon)
Steaming Sink Pits (common)
Friend Ward (common)
Corona of Power (common)
Prismatic Surge (common)
Necrospawn Liege (common)
Kyren Tax Collector (common)
Thanatos Drake (common)
Unloved Devil (common)
Snowball Fight (common)
Blessing Unbent (common)
Mountain (basic)