Link's First Custom Cube: Virtual Booster

Singularity    R  Enchantment When Singularity enters the battlefield, exile all other nonland permanents until Singularity leaves the battlefield.	No more uncommons	No more uncommons	No more uncommons	Magnetic Performance    C  Instant Choose any number — • Magnetic Performance deals 3 damage to target player. • Destroy target artifact. • Each player with no cards in hand draws two cards. Magnetic Performance costs more to cast for each mode chosen beyond the first.
Tamiyo's Calligraphy Pen    C  Artifact , Tap an untapped creature you control: Target player puts the top card of his or her library into his or her graveyard. : Draw a card. Each creature you tap while activating this ability pays for or one mana of that creature's color.	Cirdur of the Bloodwater    C  Legendary Creature – Merfolk Wizard Whenever a player casts a sorcery spell, you may pay . If you do, draw a card. , Pay 1 life: Exile target sorcery card from a graveyard. Draw a card. 2/3	Mazeform Phantasm    C  Creature – Illusion Whenever Mazeform Phantasm becomes tapped or untapped, each opponent puts the top two cards of his or her library into his or her graveyard. 1/1	Gideon's Protector    C  Creature – Human Soldier Defender Gideon's Protector can block an additional creature. Creatures your opponents control attack each combat if able. 1/6	Transmogrify    C  Instant Exile target nonland permanent an opponent controls. That player exiles cards from the top of his or her library until he or she reveals a creature card, then puts that card onto the battlefield.
Wall of Life    C  Creature – Spirit Wall Defender , : You gain 1 life for each creature you control with defender. 0/4	Darry, Steadfast Warden    C  Legendary Creature – Kithkin First strike, protection from creatures with power 3 or greater Whenever a creature with power 2 or less enters the battlefield, you gain 1 life. 2/1	Twist Bug    C  Creature – Insect Whenever Twist Bug deals damage to a player, that player discards that many cards at random, then draws a card for each card discarded this way. 2/1	Sunlit Valley    C  Land – Mountain Plains (: Add or to your mana pool.) When Sunlit Valley enters the battlefield, sacrifice it unless you pay .	Undead Mortician    C  Creature – Zombie Cleric Rite — Whenever a creature dies, each player loses 1 life. 1/1

Singularity (rare)
Magnetic Performance (common)
Tamiyo's Calligraphy Pen (common)
Cirdur of the Bloodwater (common)
Mazeform Phantasm (common)
Gideon's Protector (common)
Transmogrify (common)
Wall of Life (common)
Darry, Steadfast Warden (common)
Twist Bug (common)
Sunlit Valley (common)
Undead Mortician (common)