My Universe, My Rules: Virtual Booster

[-] [+]
15 random cards from the set.
You could alternatively have a booster in the usual rarity pattern.
 C 
Artifact – Arena
When two creatures fight, one dies.
Sadly this would let you kill one of your choice before the fight resolves. to make it actually work requires yucky wording.
Illus. Burning man
 C 
Creature – Wall
Defender
Exiled creatures may not return to the battlefield, they remain in exile.
What's on the other side? Who cares, as long as it stays there.
1/4
Creature – Silly
When Silly Soul enters the battlefield, you may put any number of lands in any graveyards into play under your control, tapped and attacking.
1/1
 R 
Legendary Creature – Cat Warrior
Forestwalk.
All cats have haste.
While you control a forest, all warriors have first strike.
5/4
 R 
Enchantment
{2}:Destroy a random permanent. Any player may use this ability.
It blew itself up again, sir. And everything else.
 C 
Creature – Wizard
{1}: Until end of turn, all creatures have power equal to their toughness.
But...
2/2
Identity Mage
{4}
 
 C 
Creature – Wizard
{1}: Until end of turn, all creatures have toughness equal to their power.
...maths!
2/2
Snow Covered Land
{t}: Add {s} to your mana pool.
{s}, {t}: Regenerate target snow-covered human.
Creature – Cat Elemental
Players may not cast spells that have the same name as any card in play or in a graveyard.
1/1
 C 
Artifact Creature – Golem
Vanishing 3
In your upkeep, you may gain 1 life.
Inspired by http://multiverse.heroku.com/cards/12254 and my wanting to reference 'crumble'
3/3
 C 
Creature – Merfolk Wizard
{t}:Look at the bottom card of target player's library. You may move it to the top instead.
Unspinning for pearls.
1/1
 M 
Enchantment
Players declare blockers before attackers are declared.
Creatures that are blocked – but not attacking, neither apply nor take combat damage.
Illus. Home Alone
 U 
Creature – Wizard
{t}: Deal 1 damage to any target.
Damage dealt to artifacts reduces their next activation this turn by that much colourless mana.
1/1
 R 
Sorcery
Put an emblem into play which says:
All counters on creatures are +1/+1 counters.
All counters on artifacts are charge counters.
All counters on artifact-creatures are in a quantum superposition, only resolvable by APNAP and quantum layer theory.
 C 
Artifact Creature – Myr
{t}: For each colour, if you have a permanent in play of that colour, add one mana of that colour to your mana pool.
Of course! It's a myr.
1/1
{u}{b}
 
 C 
Sorcery
Fateseal 4
(Look at the top four cards of an opponent's library, then put any number of them on the bottom of that player's library and the rest on top in any order.)
Curse you, Auntie Scry!

Thumbs Down (common)
Avernum Gate (common)
Silly Soul (none)
Jedit Ojanen, Keetom of Doom (rare)
Meteor Shower (rare)
Identity Mage // Identity Mage (common)
Ice Paddies (none)
Cata-fusion (none)
Crumbling Idol (common)
Myth Taker (common)
Planned Combat (mythic)
Prodigal Artificer (uncommon)
Urza's Legacy (Not the Urza's Legacy one) (rare)
Undercosted Myr (common)
Curses (common)