Multiverse Design Challenge: Virtual Booster

Conservation of Ninjutsu    R  Enchantment Whenever a nontoken creature you control attacks and isn't blocked, you may pay and return that creature to your hand. If you do, put two 2/1 black Rat Ninja tokens onto the battlefield tapped and attacking the player or planeswalker of your choice.	Blindsided Wurm    U  Enormous Creature – Wurm Trample Blindsided Wurm gets -1/-1 for each creature attacking or blocking it. 9/8	Crystal Orb    U  Artifact , , Discard a card: Fateseal 2. (To fateseal 2, look at the top two 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.)	Decree of Knowledge    U  Decree (Decrees cannot be affected by spells or abilites.) All players play with their hands revealed. "The ultimate goal of humanity should be to gather knowledge and share it with others."
Moral Decay    C  Enchantment – Aura At the beginning of your upkeep, put a corruption counter on Moral Decay, then enchanted creature's controller loses life equal to the number of corruption counters on Moral Decay. If you tell white lies you soon grow color blind. – Austin O'Malley	Grimacing Vampire    C  Creature – Vampire , Discard a card: Grimacing Vampire gains intimidate until end of turn. "Look away lest you too become my prey." -Uta Falkenrath 3/4	Xixianykus Zhangi    C  Creature – Dinosaur When Xixianykus Zhangi is blocked, remove it from combat. When Xixianykus Zhangi attacks and is not blocked, gain 2 life. 0/2	Challenge # 012    C    Top down mechanics design. See comments.
Take you down with me  C  Scheme When you put this scheme in motion, you may pay any amount of life. Target opponent loses that much life.	Pale Raider    C  Creature – Horror Warrior Menace "Their bodies are disturbing to behold, and their claws cut through out best-made armor. It is best to avoid the Pale Ones entirely." — Bandfather Argol 3/1	Rage Feeder    C  Creature – Beast Rage Feeder doesn't untap during its controller's untap phase. Sacrifice a Creature: Untap Rage Feeder, it gets +1/-1 until end of turn. 2/2	Edges of Fyndhorn    C  Terrain – First Stage Roving 3 All lands you control are Forests in addition to their other types.
Knowledge Dump    C  Instant Cascade Draw a card. If you cast a blue spell off the cascade, draw an additional card.	Lift Driver    C  Unit – Human Pilot : Target unit is Orbital. What I put up, stays up. 1/1	Challenge # 029    B  Challenge Design two "Future-Shifted" cards with different mechanics, but who's flavor puts them on the same plane.	Wall  T  Token Artifact Creature – Wall Defender 0/3

Conservation of Ninjutsu (rare)
Blindsided Wurm (uncommon)
Crystal Orb (uncommon)
Decree of Knowledge (uncommon)
Moral Decay (common)
Grimacing Vampire (common)
Xixianykus Zhangi (common)
Challenge # 012 (common)
Take you down with me (common)
Pale Raider (common)
Rage Feeder (common)
Edges of Fyndhorn (common)
Knowledge Dump (common)
Lift Driver (common)
Challenge # 029 (basic)
Wall (token)